Not a treestand, but I had a bad experience once due to plain old stupidity.
I'd just gotten back to the US from overseas and my brother wanted to go hunting. All I had for boots were the military steel toed ones. We had an unusual cold snap and the temps were down to about 10 degrees.
By the time I got to my spot I was hurtin'! I didn't stay 10 minutes and I was almost in tears.
I hauled a## back to the van. I could get in but didn't have a key to start it to warm my feet. We had a two burner coleman stove in there and thru tears I got those boots off and my feet were blue.
I fired-up that stove up and warmed those puppies over the flame and was taking a 'combat nap' when the guys got back. I took a lot of ribbing over it for sure.
I'll betcha I never wear steel-toed boots in the cold again!