I am so old school on this. I like a minimum of 10 points of steel on my feet...but then I usually going where there at least moderate exposure. I've thought about picking up a pair of Microspikes but it's an expense vs. use thingy.
999 out of 1,000 times the person using these along with trekking poles are going be ok. The problem is the the one totally disastrous time. It's no fun watching or being that one time.
