I tested it. The IR learning worked very well. I learned buttons from two different remotes (a projector at work, and a cable box at home).
But, the IR sending had an issue for me. The projector buttons worked great. But at home, the cable box signals were weak (or something). I had to walk half-way to the receiver for the signals to work.
Once the US Versions are relased of the phone, I can't wait to port QRemote. The Korean version of the app is almost useless if you're in the US, save for IR learning.