Since I can't wait until Q3 to get the Bullet SDK in cocos3d, I decided to try implementing it, using Isgl3d (www.isgl3d.com) as a codebase. However, although both Isgl3d and cc3d have similar aims, attempting to combine them is messy. What I have so far has 48 errors and a bunch of warnings. It can be downloaded from http://www.machcubed.com/cocos3dPhysicsTest.zip if you can help out.
BTW, I think cocos3d and Isgl3d should try to merge into a single open-source project, but that's just my opinion. See, cocos3d has accessibility to existing cocos2d developers and game-specific stuff in its favor, while Isgl3d has ES 2.0 and physics already.
