I've been using Simm's Studded Guide boots with Aquastealth for the past 7+ years. It's time for a new pair of boots (the laces are getting ratty). Looking at the Simm's website I see they no longer make Aquastealth soled boots. They are using Vibram soles now. However, they do not make a studded Vibram. I love the studded Aquastealth boot and I'd like some feedback from anyone using the Vibram without studs.