I have been asked about male female duos is this something people want? I have done a few and the are amazing!!

If the latter, well, hell yes.  If the former....not my thing....

Actually I prefer MMF I love DP!!

Can you explain what do you mean by MF duo?  
You mean provider bringing another male for MFM action/devil's threesome? Sounds like a tricky logistic, but wickedly sexy!