Here is a clip of the RP-250 w/ a preset similar to the Texas Blues clip I posted earlier, with some modeling of MXR distortion and delay added. The BT is a slower blues jam.
There is also the BT by itself, if anyone wants to add their take.

Track w/ lead
http://www.box.net/public/fxdh8sdp7b

Backing Track
http://www.box.net/public/47lasr4pve