Not sure if anyone else does this, but I tried it today and it works wonderfully.

I was getting irked at having 1 of my healers on my main PC hidden behind one of the other characters. Typically not a problem but it's annoying since I use HotkeyNet. Then I remembered that my 2nd monitor will swivel into portrait mode.

Since that monitor runs at 1600x1200 (Older Samsung 204B), the windows for my Inq and Def nicely fit above one another on the spare monitor. I had to reduce the text, font, and icon size but it's well worth the tradeoff.

Anyways, just sharing for anyone else out there who might not have clued in as quickly...like myself.