I think I've pimped the hell out of the Radial Head Switcher already, and I think the most common complaint is that you can't run any time-based effects in the FX loop of either amp when using this pedal. Well, Radial solved the problem...

Radial Twinline? - Dual Amp Effects Loop Interface

It looks pricey at over $300 for a new one, but if a used one pops up, I'll definitely be grabbing it.