Quite Possibly.

Growing up I used to play a game with my Grandmother we called "Ace is wild". In short, I knew my Grandmother held all her "wild cards" on the left of the hand and her junk cards on the right of her hand. I knew once she started moving cards from the left, inside other cards she was close to going out. Similiarly, when she stopped discarding cards from the immediate right of her hand, all cards were working and she was also close to going out. If she was close to going out and I wasn't, I'd start discarding my high cards which were counted against me at the end of the hand if i didn't win. This little tell got me quite a few bowls of Ice Cream [img]/images/graemlins/smile.gif[/img]

Back to Omaha, I don't know what you do but chances are good if you do it every hand people may pick up on something. Maybe simple like "He's going for high, or he's going for low". So I would defintitely try to work past it before you move off the lowest stakes.