I'm not sure where you got the impression that it's TN. The first search result, which is also the official website, explicitly states it's an MVA panel.
Although you really shouldn't be avoiding TN panels unless their particular quirks annoy you. The quality of the panel has a far bigger impact on the image than it's type.
If you've got a big desk then you just end up squinting and learning forward if you buy a screen that's small for the resolution. It doesn't affect games like BF1 and Overwatch a lot, but for most things you definitely want to get the right DPI for your viewing distance.
Of course 'lots of space' is vague, it could be a shallow but wide desk in which case a high DPI would work.
That doesn't seem to be the case:
http://pcgamingwiki.com/wiki/Overwatch