i think of upgrade to RT of 3x arc180s as a 'pro' upgrade to most working knot functions of 1x arc180 architecture;
to me as perhaps a pattern shown here. RT replacing single arc180s on both sides of input pulls/SParts brings choke of Girth to magic of Prusik etc.* Second arc180 does about get it, surely now both sides of host get pressed firmly into, but from there to 3rd arc180 even better geometry and frictions to me. After that just more arc180s extends that same geometry but of greater frictions and area rather than upgrading to another 'tier' i think as did by adding arc180 #2 and then #3. Also, odd numbers of arc180 like 3x arc180 deliver neatly to where (odd)1x arc180 would, headed back to SPart as most powerful and rigid forces** of knot node. So generally upgrade from 1x arc180 to 3x as ends up in same position with greater external force expressions in RT geometry and compounding capstan reduction of internal tension force from 3x arc180 as well.
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Node being an interruption in a smooth force line, whether being Hitch as termination or Bend as continuation or even errant Overhand locked into rope. Rope was carried onto the great ships, but once in loaded use were called a line. To me that means a rope in work as a line of force, node then as an interruption in this otherwise clean, undisturbed, pristine line of force flow.
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A single arc180 to HH etc. is VISUALLY is closed, complete wrap around, but forcewise only the single arc side gets the full treatment to me just as a pull force from 1 side tho, not a grip around. The seam side does not give full arc180 properties. arc180s are the real most evolved workhorse for this. More than one controls to grip from both sides.
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i totally think Lapp more favored in yes flat leather, as for horses, where lends self better; and more fricative than webbing/flat rope have always thought.
Unless purposeful reverse strategy to use in round (instead of flat) flexibles class /round string as safety overload fuse/release etc. where want to exploit/play off of the inherent weakness as a win/not loss, even of opposing BEs. For this would also leave loose-ish to further favor clean release/break-away from belt loop or hat keeper, necklace etc.
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i think previous tucks can help, but the real player is list of arc180 leveraged friction reductions of internal tensions thru to BE, before the final tuck. This is like only the rear most fibers in tree hinge really carrying work, from most leveraged position; the rest are little helpers to the main that is most critical. The arc180 reduces internal tensions of the want-to-pull-out force, as also gives greater trapping force expressed external rope force as arc also nips that lessened escape force powered by internal rope force. Similarly, in Timber Hitch, preceding tucks help, but final nip of most reduced is most key. Especially if that was in the 11-1 region on clock, from a 6 o'clock SPart/input pull, as sweet spot radially for nipping.
* Look at same as Prusik of 2 SParts to eyes, only as a loop Prusik the SPart legs are self equalizing/balanced to always contribute evenly sharing work, not pull all or mainly just from 1 SPart/leg if pulled to side.
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In model, most powerful EXTERNAL rope force is generally the primary arc after SPart function, also as a higher friction reducer, but notably before any other high friction reducers of it's kind. This external rope force is expressed greatest in most evolved arc180 element that has a potential of 2x the internal force/tension at that point. Both theories find mostly together then with greatest arc180 as primary arc fed right off the arc0 SPart(s) as fuel line feeding tension into the actual knot microcosm machinery. SPart has the most raw and thus rigid forces in it's section of a knot or in full knot.
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Son is engineer and he lends that a key concept is engineers think of force as more of a ghost than physical presence moving thru rope, wire, column etc. i have found it close enough to think of force as liquid flowing force per childhood lessons of thinking about electric force as water force to get a feel for electrical force. Also found much of Oriental thought have run into speaks of flow of force in work, play, exercise, thought, mind, spirit etc. so that has always been my imagery/approach.