Weird, I've seen this before but apparently never commented on it.
The PC looks small and disappointing (unless it can actually handle the 10X nozzle listed [doubtful for HydroPower], though it's still small nonetheless), but it's a pretty good photoshop as far as I'm concerned. Partially tracked pump is a good idea that has been contemplated several times and one or two XP's came close to having an ideal semi-tracked pump. (I think it was the XP110)
Speaking of BBT's PCs, a picture of the Vindicator's bladder has been posted at SSC