Were you ever planning on buying a G-Sync monitor anyway?
IPS G-Sync monitors are coming out soon enough. TN monitors offer the most cost effective solution in the short term. During the adoption phase, that makes the most sense for the display manufacturers due to the R&D costs of implementing them into IPS displays.
Nontheless, manufacturers offering them on TN displays has nothing to do with what the technology does itself, especially since it is clearly stated 1440p IPS G-Sync displays are on the horizon.
Not really on the horizon, more on the other side of the globe. But,
eventually we'll see them, but at the dragging pace with gsync by that time there may be a universal standard anyways. I mostly think the announcement of gsync was rushed, just one company's marketing to counter another's. AMD came out with Mantle announcements early, and nvidia wanted to rush out one of their own.
We have one crappy Asus TN screen announced for the middle of next year and confirmation of Asus having some sort of exclusivity on gsync enabled monitors till late next year. My guess is IPS+Gsync will be seen in 2015 with those schedules in place.
I was excited about gsync, but reading Anand's review, it seems not a big deal if you have serious GPU hardware and never go below 60FPS already. Certainly not worth stepping down from a quality screen and high resolution to a crappy screen and middling resolution.
Once gsync gets out of its infancy late next year or 2015 it will be interesting to see how it all shakes out and what other standards come out to do the same thing it does from other parties.