I’ve been on the fence about the P20 for a while. Some people report getting janky units. BenQ has a 3:2 monitor with 3840x2560 resolution, 120Hz refresh.
I do applaud the company for bringing a new interesting option to the market, though. Integer scaling HiDPI is rare enough (though thankfully is finally becoming more common), but integer scaling HiDPI with a ratio that's not 16:9 is practically a unicorn. If they can get QC under control I wouldn't mind buying from them in the future.