I've been chap sticking my syn gut jobs and string movement has been nil. I may have to move on to silicone.
If the slippery string thing=spin is correct, this is both a revolution and a huge cost savings, because it should prolong string life and make cheap nylon and syn gut more attractive. I prefer the feel of synth gut over anything except gut, but after a few hours having to adjust strings drives you nuts.
3.5 player. Equipment: Prince NXG OS, hyrid kevlar mains/poly crosses 50 lbs