Thanks John

That's a nice collection of 610s!
Do you not find the twelve-string a little cramped, though? Does the 610/12 have a wider neck than the six-string? I know it's a cliche when talking about Ric 12s, but honestly, when I go to my 360/12 after playing my 610, the fretboard feels like an aircraft carrier deck! Which is nice, as it means I can do all the stuff I can't usually do!
I managed to gig my 610 the week before Christmas and it was more than satisfactory, I'm pleased to say. I was swapping between it and my Squier J Mascis Jazzmaster, which has a much more substantial neck and chunky frets, as well as a longer scale length. However, any worries I had regarding not being able to quickly re-adjust to one guitar after playing the other were completely unfounded. Fortunately!
Sounds-wise, it proved itself quite able to cope with our set which varies between stuff by the likes of Echo and The Bunnymen, Love, The Black Angels and Black Sabbath - yep, the 610 handled War Pigs with aplomb! Lots of fuzz and feedback fun. My only criticism would be that I struggled with explorations at 'the dusty end' where the skinny frets require a little more dexterity than I managed at times, but that's entirely a case of blaming the guitar I think!
So all-in-all, I'd say I'm quite happy with what was a bit of an impulse purchase. I'm not sure whether it was much of a bargain it was (it was about $800) given it's condition, but I bought it as a guitar rather than an investment, so I can live with that.