The Asus PB278QV dropped down to £250 on Amazon this morning, so I jumped in.
As for a 32" 1440p option, I played with a 29" Dell 2560x1080 monitor last week, and found the width (with where I sit) basically pointless, so a 32" I'd envisage being just as wide (high FOV) and furthermore its pixel scale would be no better than my current monitor (if not worse).
I believe a 27" 2560x1440 monitor will be a sweet spot in FOV on my desk and better pixel scale (better image clarity).
So I just have to hope the response time/lag of the Asus PB278QV is good, and isn't noticably slower than the fab times on my old BenQ BL2411... I'll report back incase it's of use to others...
ps: "If you want to game on a monitor, don't use switches and use DP." - I've been happily gaming on a KVM switch for nigh on a decade... I put a high value in the usability/friendlyness of it, and the lack of clutter.