While I haven't faced your exact dilemma, I brush paint MA all the time... straight from the bottle it does fine. You just have to go real light with it on areas where you want it to blend good. Put down several thin coats, letting it dry completely between each one..
Jack also had some very good advice... try it on scrap and you'll know! I know the paints do well together, I would be more curious to if the tones match perfectly after drying..
Good luck!!