Just letting people know HK has the Orange 6ch RX (for use with the Spektrum DX6i) in stock as of this post (6-6-2012). Seems they run out quite often, so if you're looking, you might want to buy one (or more). Find it HERE.
Yes they will. And they are doing quite well. It's all I have flown in my Trainer, and it's also what I started out with on the Bipe and the Mini Edge. Only one issue, but that has been resolved and was caused by using too much travel.