Swapping over to the M&P. Carrier question. Single or Double?

I have been carrying my Glock for a while in a Raven holster with a double mag carrier. I was wondering with switching platforms if I should take a look at the single mag carriers.

What do you guys run?

Use what works best for your needs. For CCW I carry a single mag carrier from kytexgear.com and for competition I carry two. They work well and aren’t bulky.