I've ordered a copy of BWG, but don't have it yet. Here is the word from Luke on supplement compatibility.
Anyone who's got a copy of the rules figured out exactly what's problematic? Is it problematic enough I won't want to touch it, as someone who is just getting in on Burning Wheel?Is the game compatible with the supplements? Mostly. Elements of the supplements that directly reference weapons, spells and Fight will prove problematic.
I want to play Burning Wheel primarily to be able to play the Burning Sands supplement, so I'll be sad if the conversion process proves too complicated.