Try cgminer 3.7.0 that issue with detection should be fixed now.
CGMiner 3.7.0 is working as far as detecting the devices finally, going to let it run for an hour or so to see what numbers I get... so far the averages a looking pretty low (compared to bfgminer), but it's only been up for 4min.
Here's 15 hours of using BFGMiner (3.2.0, as it's the only version I could get to compile on the rPi without causing tons of HW errors)
I compiled CGMiner 3.7.0, worked fine at detecting the devices (unlike previous versions of CGMiner), but the hashing numbers were a bit different, granted I only let it run for about an hour, also right before I was about to take a screenshot, libusb hit a write error which caused one of the devices to drop dramatically in hash rate.
Screen shot of error:
Screen shot of results:
