I used to use one too when I had my FM3 board. I've got one of those Mission rechargeable power supplies I might use instead to power the Morningstar but it makes sense to power it all from the wall just in case. I'll probably forget to charge the Mission up before a gig knowing me lol.I use one under my FM9.
Temple Audio power to drive the PP2, then power the FM9 from the "courtesy" outlet on the PP2. And then I power my AudioFront Expression IO from a DC jack on the PP2.