I have been thinking about going with the same set up on my Heckler except I currently have a DRS sitting around. I do know that people running the Diabolous and the E13 guide were having problems with getting the bashguard to mount up with the Diabolous. I can't remember what they did to remedy that problem.
I decided to wait for the Atlas cranks to become available and then I will make my purchase and set up the DRS as a 36t/22t.
Good Luck and I hope I helped alittle bit.