Yes that's my plan, game on the 1440 and do whatever else on the 1080Well the question is can your 2070 handle two monitors and the answer is yes absolutely, it can handle as many monitors as you can physically plug into to it.
You wouldn't want to game on a 1440p and 1080p monitor using nvsurround or something like that. Im not sure if that is even possible if it is you would likely have to set your 1440p monitor to 1080p. I would personally much prefer using the 1440p monitor for gaming and the 1080p monitor just as a secondary monitor.