Yes, for a couple of years now. I currently have a VC-450 with CC with stabilized mount and a go pro. I bought a WKM several months ago from RC Hobby Helicopters and have been waiting patiently for them to get the Karbonic 60Six Y6 frame on the market, however there have been so many advances in the hobby the last few months I may go with something that is not vapor ware.
The hex from Aerial Tech. doesn't look like cutting edge design, just a sturdy design from people with a very long and distinguished track record in the industry. The UAV carbon frame DJI USA is selling now looks interesting, but I have not read much from people who have tried them. In the mean time my WKM is still in the box calling to me every time I go in to my shop.
As I said, 2012 will be an interesting year.
Rick