I may have missed part of this conversation but I think that recording
still exists on CD.  Only a few years ago I purchased a CD of Fats'
piano rolls being played on an English theatre organ; it is still
available at CDNOW as far as I know.

The title is "Fats at the Organ"  It is a ASV/Living Era CD, # AJA5007.
It's a fun CD but you can tell it is a QRS roll, not much expression.

Cheers,
Dave McPeak