All of this about body temperature is very interesting. I've always had a low temperature (97's) and experience I similar thing with cold/sweat. I am almost always freezing, but the colder I get, the more I sweat! The weird thing is, I do terribly in hot climates. I think my body just can't regulate its own temperature very well. I also have adrenal problems. I'll be very interested to see if the massive layers thing works for your sleep. Despite always being cold, I get very warm at night and can't wear much to bed. Maybe I have a different problem then you.
Zach, just to add more evidence to your case, I have a friend who, like yours, drinks massively (although it's bottles of wine a day, not beer), does drugs throughout the week (amphetamines, hallucinogenics/psychedelics/psychoactives, tranqs, mushrooms, anything anyone will give him, really), gets about 4-5 hrs of sleep per night, barely eats a thing, and is one of the most active people I know, both mentally and physically. And, to top it off, he walks around in flip flops and short sleeves when the rest of us are bundled in parkas. So maybe body temp does have to do with it.