some omaha (&HL) questions

[smbruin22]

never seem to like omaha but really like O8. partially because it seems like people don't know how to play the low (include myself for now). and i'll think i'll learn omaha high too as i'm at it.

anyway... wondering the following:

is omaha HL (or even omaha high) regularly played anywhere in vegas?

is Omaha HL almost always limit? cash vs. tourney?? .... i see alot of PLO, but i think that's omaha high.

should probably ask this in internet poker, but is O8 or Ohigh more popular?

thanks in advance!!!!