I received a new pair of Simms Guide boots with the new Vibram soles. I've been out four times since Christmas and have not been able to tell any difference with these soles over my old Simms with felt, with the exception of walking in snow. The old felt would build up a pretty good load of snow as you walked making for a difficult time. The new soles don't have that problem. Truly, I have not noticed a difference between my new rubber soles and the old felt soles. The boots dry quickly and there is not grit or grime as with the felt. I'm glad I've got them, and I won't look back. I fish some pretty slime-covered river bottoms, so I've put them through some challenging tests already with winter on top of that. I do use a wading staff though, so perhaps that makes up for it, but I also used one when wearing the felt and I cannot tell any difference.
Kelly.
Tight Lines,
Kelly.
"There will be days when the fishing is better than one's most optimistic forecast, others when it is far worse. Either is a gain over just staying home."
Roderick Haig-Brown, "Fisherman's Spring"