Wouldn't make a bit of difference for one handed. I have a tiny bit of ideas about it, having shot my P30 at Rogers for a couple of days.
The cycling speed advantage of P30 won't matter as much since you're slowed down by virtue of being one handed. There is not that much weight difference between the two to matter one way or another.
Something that you didn't ask at all but I would prefer LEM for one handed stuff, especially defensive, while I'd take DA/SA for primarily two handed shooting. Now, I already told you that my opinions are usually in the minority so take if FWIW