I'm contemplating purchasing a box of each and mixing things up to produce either Marie Louises for 1813-1814, or the mix of whatever was available issued to infantry for the 1815 campaign (as described by Elting). Ideally, I'd like to be able to have French infantry with both 1808 and 1812 regulation mixed together, with some head swaps to put forage caps, shako covers, or others on greatcoated figures and the like.
I'm pretty sure one of the guilty parties here has tried something similar, so how well do they mix?