As I wrote in the GFWL, I won't buy this even if the game was pretty much the only reason I wanted a One (with Halo games too).
I purchased a good amount of games and DLCs on GFWL, now I can't access them and XBox support refused to give me a refund or a compensation in some form, because "there are working on it".
Meanwhile I spent my money and I can't use the contents I purchased.
No way I'll do the same mistake twice, Microsoft is only interested in money, and if the new line for the company is taking rid of the "old burden", they'll do it in a blink of an eye, no matter if paying consumers will take the hit. They did it for the first XBox Marketplace, they did it with GFWL (at least until they'll "fix it"), they will do it again when manteining a service will cost them money they don't want to spend.
So no, thanks. It's not a fact of using another service, because I already use Steam, GOG (I have a huge library here), Origin and Uplay, it's the fact I have no trust in Microsoft for providing support after the initial, enthusiastic launch.