Who gives a shit anyway?
At all the events Summoner is useful for, MP is not a limiting factor.
I'm pretty sure a Nirvana Summoner isn't going to give two shits if you can look cooler soloing EPs than they can. Also, for the record, -7 Perp * 60 ticks = 420 MP. Depending how efficiently you can turn Nirvana's Perp into Refresh through gear swaps, you're already much of the way to 900.
