Sh-09 and Sh-2 together, redundant or useful

Hello esteemed community. I have an sh-09. I am considering an sh-2 to keep it company because I want another Roland of similar vintage and sh-2 is the model most readily available on auction sites where I'm at. But of course the two models are very similar and perhaps redundant together.

Is there any way that the two could complement each other, or should is having both kind of a waste?