I'm still waiting on my iPad 3G so I can't test the SlingPlayer mobile yet. I put a video below of SlingPlayer mobile on an iPad. I hope they clean the interface a bit. With the extra real estate SlingPlayer should be more like its desktop counterparts and not have things clutter up the interface.
YouTube - Slingplayer for iPhone running on the iPad
Congrats my friend! Does it look almost as good as your WiFi stream?A side from the pixel doubling (which I hate), Slingplayer mobile works fine on my 3G iPad; No freezing or stuttering. I do get a particular good 3G connection. I can get speeds from 1.2 - 3 mg/sec.