Have you found the 1080 vertical resolution to be a problem in any way? I am looking at the 49" displays as my primary work display for data science work (to replace an imac + thunderbolt display arrangement). Obviously those are higher res, hence why I was looking at the newer high res 49" panels.
I intentionally avoid 1440 vertical resolution.
My last monitor was the 27" ACD, which is 2560x1440.
What I found is the higher resolution at that size cause me often lean forward in order to read the smaller text (I am a Chinese, and Chinese characters are more complicated than English). Therefore, When I pick a new monitor. My gut feeling told me that either go for 4k or 1080P.
For standard 27" 1080P, I am happy with the UI smoothless (I used to use 4K TV as monitor as well, I know how it looks, 1080P UI of course not as sharp as 4K HiDPI), but the reduced usable space can be an issue. However, my viewing distance is about 80cm. So, if your viewing distance is much closer, you may really want some higher vertical resolution options.
Since the CHG90 is practically 2x 27" 1080P monitor stitching together. This doubled working space is good enough for me.
So, the real question is, if 1080P vertical resolution really cause any problem to you. e.g. If that limited vertical resolution makes you unable to read something without scrolling. For me, that's not a problem at all.
And here are some example of how the UI looks on my CHG90.
FCPX
Blender
Affinity Photo
Safari
Other usage
Noted that the seamless 2x 27" setup makes the monitor way more useful than two separated 1080P monitor, because you may treat the single 32:9 monitor as 3x 4:3 monitors. No need to care about the "gap".