Center Point Stereo Spacestation

Can't speak to that particular model, but I've heard Aspen's other Mid/Side cabinets ("SFX"? I think Fender had one for a bit?), and they sound really cool. I mean really cool!!!

I guess I think it ought to be (based on specs - and we all know about specs) loud enough for your smaller gigs. Perhaps when you need to scale up a bit there will be a house system you can use to supplement your rig?

I'm pretty sceptical.  It's using reflections to add space.  I like space, and therefore reflections, but it comes at the cost of clarity (Bose anyone ?).  Waves reflecting off each other ???  I doubt there are no 'sour spots' close up and can't see there being any real stereo sweetspots anywhere. There's a lot of BS in the description, but you already know that.
 
To simulate, just put one monitor in the center of your room and stick another one underneath turned 90 degrees.  Play with the phase or encoding.  Let us know how it sounds.  If you're going to use two, I'm sure you'd be better off spreading them in stereo with sides speakers going to opposite sides for space.
 

Mike, the inventor says no to any two-spacestation configuration.
 
I don't play keyboards in a band , but if I did this seems like it is the ticket. Thanks for the link Bat. That was better than 100 reviews. 

Yes, of course you'd have "4 sides", but I'm thinking that might not necessarily be a problem if they're close enough together. They'd be separated by 18", which is nearly 3x the speaker diameter. I know in hi-fi enclosures that would be a no-no. But I'm thinking that might only be an issue less than 2' away from the cabinets.
 
Bat, thanks for the link. I'd actually found that link during my google research. "Holy Crap" seems to be the common reaction when people first use this box. They all rave about how good simulated Leslies sound, as well as ping-pong tremolo EP patches. Organ, Rhodes, Wurly and Acoustic Piano make up 99% of what I do live, so if the thing is loud enough it sounds like just the ticket.
 
As for relying on room reverberation as Paul points out, I don't see that being a major concern. You can adjust the M/S balance to compensate for more- or less-reverberant rooms. The big problem would be outdoor venues, but in that case my keyboards would be going to the FoH and the Space Station would just be for monitoring. I've blown up speakers and amplifiers (talking actual smoke) on outdoor stages so I don't even try that anymore.
 
Prior to finding this device, I'd been planning on using a pair of Roland keyboard amplifiers set as far apart as possible. But that's heavier (got a bad back) and more expensive, and the audience really only experiences the stereo effect if they're directly in front of the stage. The Space Station is supposed to give a stereo sense even in an adjacent room.