Yes.... sort of. Matters more at the point just as you leave the bike, as it dictates a lot about what will happen to you in the next few moments... But also important is what the bike is doing around you. If you lowside, the bike often skids ahead of you, so when it slows to a stop, or comes to rest against the kurb, guess what you may be skidding helter-skelter right into in 3... 2... 1... !!! If you highside it, or similar, you could have a 42 stone lump of bike sliding/cartwheeling behind you, so even if you slide to a stop safely, you then get hit round the head with your own ride - Talk about adding insult *with* further injury!! Yes, naturally. However, you also present some very different surfaces to that of the road (sounds so nice when you say it like that) than a cyclist. Even different leathers slide differently, depending on density, surface finish, hide (Kangaroo leather is supposed to be THE dog's danglies for m/c wear), never mind the different denims, kevlars, textiles, etc. Some people find pure leather boots have better stopping friction than sporty riding boots with sliders and things.