One neat thing about trackir is that once you're accustomed to it, you're not "using it" anymore, you're just not conscious of it, it's almost like a thought-controlled view system.
The trackir profile editor is invaluable, without it I probably would have given up on trackir. It was giving me a lot of grief until I found a thread on this forum about optimizing your AH profile. If you're having problems with trackir in AH I encourage you to check out Fugitive and Wiley's stuff and learn your way around the profile editor program.