Ok I've just made the transition from NL Hold'em to PL/NL Omaha. I have been playing for 3 days now. I've played about 4k+ish hands roughly (mainly 4/5 tabling the micros on pokerstars) I have come out near enough break even from the cash games (slight profit) and some fairly major success from entering some Micro NL KO stngos (ITM 2/3 entered on avg)
I have read some Omaha strategy but not much, I tend to play TAG, I know i have some major leaks for example going allin on the flop with the nuts (just flopped a wheel on a rainbow board went allin guy calls with top set and rivers quads etc).
I also exercise good bankroll management and always leave the cash games once ive doubled up and join another
(learnt to do this the hard way when i sat at a table with 2 fish that literally potted everything preflop and nearly every street, won about 10 buyins from them, got dealt a monster reraised pot preflop, flopped an overpair with the nut flush draw and gutshot got my entire stack in on the flop fish had bottom 2 pair and i bricked turn and river.... 
)
What i don't get is, I've played NL Hold'em for a few years, read nearly every strategy book there is and i always end up busting my bankroll, yet i play omaha for 3 days and churn out a decent profit, with id say a half decent hand sample size.
I'll post some graphs later (HM doesnt like my pc so i have to transfer my HH to my laptop and import them into that HM = major pain in the arse)
EDIT: I should probably add I only play Omaha Hi because i don't like splitting pots 
when i have the nuts
