thanks, y'all. i loved reading your responses. fleblebleb had it right - i was climbing in the gym, so it had practically nothing to do with the weather. i've got a cozy pair of mythos for all-day wear. i love those things. but a few months ago i got a pair of anasazi velcros for "better performance" sport climbing and at the gym. they were awesome, but i thought perhaps a bit too big since i could wear them all day without a whimper. so ... when i had to send them back due to a "defect" i asked for the next size smaller. what a difference one size makes!
it's not like i have to take them off before i hit the ground, though. i think i'll just grin and bear it ... unless i start losing toenails!