I set this up on my mario kart rig on the weekend, that uses a driving force gt.
Left mine on split pedals, didn't use the profiler. Configured the keys in game and the controls and vibration were fine.
Handles really nice out of the box.
Pretty fun game actually - i just wanted to test multiplayer, but it forced you to play before you can see the options!
Once I get my new active display port adapter ill test it on my rig with the g27, but that won't be till next week