I use MRD/THM. It does worth using as soon as you have the "correct" point distribution. You just can't expect miracles...obviously a MRD magic accuracy isn't like THM one since just the weapon base m.accuracy already put 20 m.accuracy over MRD.

But having at least 80 points in PIE and using 4 darksilver rings help a bunch while playing mixed.

Absorb spells are pretty helpful at MRD, helping not with the accuracy but with damage too.

I really would suggest you to at least try it at higher rank! ^^