IPS 144HZ is great for gaming now:
http://www.tftcentral.co.uk/reviews/acer_xb270hu.htm
IMO, there is zero reason to choose TN panels now.
I'd say the opposite. IMO there is no reason to ever choose IPS panels for gaming, now. Cheapo IPS panels (as used in 'gaming' screens) don't have sufficiently better colour reproduction than the better 8bit TN panels now. Response time and trailing are more problematic. IPS glow on cheap IPS panels is usually horrendous, and backlight leakage is frequently much worse. Yeah, viewing angles remain immeasurably better, but what use is that for gaming below ~34" ? I still really want more high performance VA panels, as they don't suffer from glow, are potentially much more responsive than IPS, and have vastly better blacks and contrast than either TN or IPS .. but I suspect we must wait for the seemingly delayed DP1.3 for more of those (the 144hz 35" 2540x1080 VA panel seems like way too low PPI).