I am a lifelong skier and all members of the family except 16 year old son ski as well. 16 year old is a snowboarder. We ski/ride mostly Mammoth and Colorado (weather conditions there can be in the "freezing" range and sometimes into the high teens and mid twenties (obviously not as cold as in the East)). My experience with gloves is that I've always wanted relatively well insulated ones to deal with potential temps in the freezing and subfreezing ranges. I'm not particularly oversensitive to cold, and neither is my snowboarder son.
My snowboarder son wants new gloves and he is absolutely insistent that he's got to get "thin" gloves because he says that's what all snowboarders use because "thicker" gloves are "impossible" to use when trying to buckle snowboard bindings (fyi, he has brand new Burton Mission bindings this year, whose buckles seem to be pretty nice). He was actually proposing that he just use his heavy duty gardening gloves on a recent ski trip because they are thin enough for his needs. However, my son's judgment sometimes isn't the best--he's a bit impulsive and if he sees something he likes the look of or if he gets it in his mind that a certain item is what is needed, he gets extremely adamant that that's what he must have, regardless of whether it makes any sense.
So what I'm asking is--what do boarders do for gloves? I've seen "park/jib" gloves that are pretty thin, but I assume that those are for non-stormy days when the temps are in the high 30s (heck, I'd wear those in those conditions; I usually don't have my gloves on when there's no wind and its above 35 or so degrees); my son really needs gloves that will work down into the 20s. I understand that boarders need more hand flexibility than skiers given that they do need to get their binding buckles on and off throughout the day, but I can't believe that a boarder who's going out into (for instance) typical Mammoth stormy conditions (temp in the 20s, snow falling heavily, wind gusts of 20-40mph) would be wearing anything other than a relatively typical moderately insulated glove.
All suggestions and input welcome. Thanks.