I'd bet I'm one of the hold-outs. I use arrangers for 80% of my singles, but I still keep a B-3, 147 RV and Rhodes at one of my house jobs at a local country club. Mostly, it's left-handed bass. I use it on about 35-40 jobs a year.
On my arranger jobs, on half the material, I use left-handed bass. Sometimes, I use an XB-2 with a Motion sound top box.
I just restored an old 1949 M, which I'm running through a 145, just for fun, at the office.
I use the B for sentimental reasons, and we have a small contingent of people who are part of a Jazz support group who are fans of the Jimmy Smith, Jack McDuff style.
Would NEVER move the thing, but it has a home and enough fans of the style to make the maintenance (tubes, belts, etc.) worthwhile.
For people who have never played a B with a tube Leslie, do it if you get the chance. It's still Awsome!
Russ
[This message has been edited by captain Russ (edited 05-18-2007).]