i hope there will be a blacksmith in BG2 that will make Dragon Armor, for a heafty price of course. depending on the Dragon(s) age, you could get some good armor. although there will probably be better armor to be found before meeting any Dragon(s), the idea of using thier hides as armor is cool.

anybody know if a Ring of Protection can be worn while wearing Dragon Hide armor?

And you should be able to have like a trophy room-where you sell the heads of defeated foes for cash. Like bandit scalps in BG1

I can't speak for everyone else but in our game of D&D, we were given silver dragon scales by a silver dragon (long story) and, of course, we made it into armor. The way the DM played it was that it was not magical originally but it gave one hell of an AC. And since it wasn't magical, we could wear Rings of Protection with it were we so inclined. Also, it was enchantable I just didn't have the funds for it immediately. Once you have it enchanted though, the ring must come off.