Some find TIR a bit disorienting and can get headaches or nausea. Some swear by it and think it makes them better fighters.
In my experience, it adds to the immersion and make it easier [for me] to keep an eye on the opponent and keep my SA current. With an aggressive enough profile, you don't need to move your head much to get the in-game head to get all the way around to check your six. I've got a 24" widescreen on my desk and sit about 3' (arm's length) from it. I only need to point my head at the edge of the monitor to check my six, so I can still see the display fine and my TIR doesn't lose sight of the emitters on my ProClip attached to my headset.
Will it make you a better pilot - no; only practice and training will do that. Will it help keep track of the cartoon world around you - perhaps; it all depends on your brain and giving yourself enough time to get used to it.
If you're a DIY kind of person, search the 'net for "freetrack" and you can build your own [lower res] TIR rig.