Nice rig. I dig that color scheme.
I have the same setup but in the stock black config.
Widebody 1x12 Boogie Cab under the Mark V 90 Combo. I have the stock Mesa Black Shadow in the top cab and ended up puting a EVM12L Classic in the extension cab.
Fantastic combination. The EVM is one of the few speakers that worked well in this config for me.
I think it's more revealing and really shows itself when switching between EL's and 6L6's.
I'm probably in the minority, but I landed on the EL34's when adding the extension cab.
More compression and sag IMO.
I had gone through speaker swapping in the combo at one time. I tried (2) different Celestion Alnico's, the Gold and Cream, as well as an Eminence Governor that was installed in the Mark V when I purchased it. The Eminence was immediately and permanently removed as it didn't do it for me either on it's own, or in combination with the EVM12L.