RE: For the guys who change in the field..
I've done it all ways. Now....I wear whatever I have to to NOT get overheated on the way in.
I also stay hooked up all the way up and down. So....I get fully dressed before I ascend, now. If I take my time....I have minimal issues sweating (unless its REALLY hot). I see no benefit (for me) to getting dressed at my apex (like I used to).