I built two of these cabs 25 years ago in LA when I was working at the TV studios. Still have them. Initially, 30 years ago I built a 15x12 cab using the EV plan for the 15 side for playing guitar through a plexi head. I like to be different, and it was a deep dark sounding cab. I made that cab into a rolling tool box for use at NBC.
I used Peavey Scorpions initially, then Vintage Magnavox, EVM-L, and Kappalite Neo's more recently. I actually liked the Peavey's best, and still have one from 30 years ago, and one Magnavox. Sold the Neo's. I thought it would make the cabs lighter switching from the EV. They didn't make the cabs seem any lighter, and they didn't sound as nice as the Peavey. They never really got a chance to be broken in though.