I held the Katoolahs in my hands today, at REI. They would give good, slick conditions traction, like wet snow/slick limbs, w/out skewering limbs. I did take a measurement on my fingernail/key, which I'll measure later and post.
I hunt in really steep country on foot. I've been using the katoolahs for a few years and recommend them. I have a couple of friends who bought the Black Diamonds and they are inferior. The down sides to the crampons are side-hilling (they grip like crazy but wear your legs out as your ankles sort of roll to match terrain) and they sometimes pack with snow when it is warmer (not as badly as bob soles in my experience). They are also loud when crossing rock. On down hills they hook up so well that your knees can get sore. The newer ones have some sort of rubberized material that helps with the snow pack. They get good traction when on rocks and grab on wood like crazy. You can climb like a goat in them. They hold up very well and are a great investment for steep slick country. No more falling, except when you hook your gators, then down you go. After a bit of use you learn to walk in them.
