I got a BB30 frame in November, it came with adapters that worked fine with my existing Ultegra crank. I got a great deal on a SRAM red crank on Craigslist and got the GXP version of the adapters. I've got about 2,500 miles with no issues, but time will tell.
I have not spent any significant hours on a bike with a true BB30 crank, but I question BB30's real benefits. I guess I can see it for people that obsess about bike weight, but that's not my thing since I'm pushing 180lbs. If I was buying a brand new crank, I would probably go with an actual BB30, but I seriously doubt I'd feel any benefits over the current setup.