If you run from *.bat files, then place the shortcuts on the desktop, then it should work ok.
To be on the safe side, for the bfl device, specify the com port number in the second *.bat file. That way you know its not even looking at anything else.
Stating a com port might help if other ASIC devices are present on the same machine like block erupters. I'll look into that - Thanks a bunch.
I updated BFGMiner 2 latest version and it turns off GPU when ASIC is present. Shortcut parameters got too long to define GPU and ASIC all at the same time - hence 2 instances. Working good now.
I'm also now managing my blades with BFGMiner. 3 blades per rig on the same user. Seems like my variance has gotten bigger because difficulty increased drastically on that one user.