Are you planning to use the M1 PWR to bi amp your speakers?
I dont see any issues with regards to compatability between them but the fact that the M1 PWR is a Class D amp, thats the part that you need to ask yourself whether you would like the sound characteristics of it. At 100 wpc@8 ohm, it has plenty of power to drive the RS speakers.
I use M1 PWR coupled with M6i integrated amp to bi-amp ProAc D18 where the M1 PWR drives the tweeter. Initially, it sounded harsh but after using them for about 3 months, it blends well in my system.