It's my understanding that the coating on Amsteel products (including Lash-It and Zing-It) is actually intended to provide MORE grip that bare UHMWPE rather than make it slippery! UHMWPE is actually a very slippery substance. It's used as artificial ice. I think most people here find that grip improves after the cordage wears a bit. I think that has more to do with the very tiny bit of fraying that occurs rather than the wearing away of the coating. (Dynaglide, on the other hand, is designed to be slippery.)

All that said, splicing is far preferable over knots with this stuff for many of the uses that we put it to.