In the rooms i play, PLO and PLO8 tournaments are played without an ante, while NLH tournaments are played with an ante.

Its commonly admitted that the open sizings in NLH are:
2.5BB for more than 70BB effective stackss
2.3BB between 30BB and 70BB effective stackss
2BB for less than 30BB effective stacks

What should be the sizings for PLO / PLO8 tournaments ? same or more ? (equities run closer pre flop than in NLH; on the other side there is no ante)