Sorry for the belated reply, thanks for the feedback.
When I've played the 10-20 2-way, er, 10-20 Omaha O.E., the stud part was clearly less popular as 2-3+ players often got up and took a break.
Not that I'm a huge stud fan, but the mixed game holds my interest longer.
(btw it's a shame the HOSE game didn't take off.)
Omaha H/L definitely has decent action, so you just have to hope the so-called "aggro-donks" (?) don't get any hot runs. (I have a couple of guesses as to who was the loose-action guy going from 200 to 1500, but I know naming names is inappropriate here.)