Put a calibrated set of Black Dogs into my new-ish Agile AL-2500 yesterday. My head is very congested today, and my ears are shot as a result, so I can't really comment on the fine points of the tone, but I
can say this -- this guitar sustains
F O R E V E R !!! The Black Dogs are also a lot less finicky than the Riff Raff in terms of what boost/fuzz I can use.
The Black Dog is pretty much the polar opposite of the Riff Raff.
Here's a pic:

The guitar on the left is
Blue Meanie (AL-2800): Riff Raff bridge, Stormy Monday neck.
The guitar on the right is
Size 8 (AL-2500): Calibrated Black Dog Set.