Yeah the Sram mech won't sit flat on it as there's this step on the hanger, well it has it on mine, maybe yours hasn't, but you should deffinetly be aware about it when fitting you derailluer.
DJ is the best.
I started getting bored of street and was missing dirt, and having a street bike wasn't actually that much fun riding dirt with. But now that street side of me is starting to come back out, so you may see this gaining a more street style build.
Well in that case, you need to be carefull of the hanger as its not completely flat and my X-9 didn't sit flush so setting it up was a pain. If you have that problem you may have to put a washer or something in there to get the derailleur to sit even.