Now that is a cool little rig. I've been thinking about putting together some sort of small tube amp rig w/ OD pedals that I can use on it's own, or then combine with digital modelling for bigger stuff. A small, versatile tube rig like yours would be great on it's own, and could help fill in some color on a digital rig. I was looking at those new Roland Blues Cubes, the one Eric Johnson did some work on. I know it's not tube, but it's interesting as it's own thing. Could run it with pedals, and combine it with some FRFR wedges for the modelling and stereo effects when I feel the need to really kick it.
Where'd you get the cab from? It looks great!