While I suppose it looks kind of cool I can't really see much benefit to running a 3rd person game across three screens like that. Everything looks kind of stretched out too.
I am playing SWTOR (as third-person) across three screens and its pretty cool. The left and right screens are a bit warped, but its not too bad.
The only real problem is that its kind of expensive to get something like this going. I am using screens that cost ~$150 each plus a ~$200 video card. So at around $650, I don't think its worth the cost of admission unless you are doing something like flight sims (which I am doing on this rig) where three screens are actually awesome, needed AND cool!