I was just curious as I can't recall seeing it before.
https://en.wikipedia.org/wiki/File:Buffy_Sainte-Marie_Langesund_Norway_2012.jpg

Bingo! er...I mean, Yamaha!
 
http://www.guitarcenter.com/Yamaha/SLG110S-Steel-String-Silent-Guitar.gc

Thanks!

Our current lead singer (we're in the midst of a friendly transition) plays one.  It's not terrible, but I was a bluegrass picker who lived for the old bass cannons, and new Larivees once upon a time. It's not quite on of those, but easier on the wallet.

I've borrowed a friend's Yamaha Silent Bass for gigs a few times. It sounds amazing, and is probably the most comfortable upright I've ever played.  
 
I just watched Slowhand At 70: Live at the Royal Albert Hall on the local PBS station and Nathan East plays one on most of the ballads.  
 
Here he is playing a particular excruciating note: