I have a pair of new PVM-A250s in ahead of an install and wanted to test a couple of things out. My first one was to see if the monitor does the right things between it's studio swing-range HD/SDi 4:2:2 input and it's full-range HDMI 4:4:4 inputs. Aside from a slight shift in luma (big Y) the difference is minimal (and definitely not the usual 601/709 matrix-mismatch you see on other monitors).
Y, Cr, Cb 4:2:2 HD/SDi input, peak white field before calibration - out of the box these monitors are a tad blue and a bit too bright.
R, G, B 4:4:4 HMDI input, same source.
We're running these over many hours to see if they drift at all. Will add some more to this post next week with those results.