Dual wielding MP9s

My primary is a well mb04. I currently have one MP9 and was considering getting another to dual wield. Would having two mp9's as my secondary be worth it??? it sure does sound like a lot of fun. And how would I holster both?

The only way I can think of is with two drop leg holsters. The holsters work really well and prevent it from moving much but it is kinda heavy on your legs.