I got an SE not planning to use it outside the studio, but now I want to, so I'm seriously considering getting a second non-SE version for playing out. Two in the studio would then offer obvious advantages even if you without polychain, so that makes a second purchase far from redundant. For example, with reasonably clever settings and sequencing I could smoothly treat the pair as 6-note paraphonic, or 1+3, or 1+1 and 2-multitimbral, or 6-octave monotimbral. I'm wondering about any unobvious the-whole-is-greater-than-the-sum-of-the-parts-type benefits of having two Pro-3's. In particular, are there any suggested uses of the sequencers that you could only do with two Pro-3's? Any other clever synergies?