They're probably fine as long as you stay on your bike and don't hit anything . . . .

No experience with them, but the thought of trying to thread a lava rock garden in sandals just makes me cringe.

We have super narrow trails where you almost always scrape the side of your foot on a log, even just lightly would do some damage. Once I thought I'd left my little toe behind.

They'll work fine with Crank Bros.