This variant of the Rogue body shape is called a "gentle omega" and we made the first one for our distributor in Japan, Hajime at Sleek Elite. This is a really cool bass - the Walnut neck laminates give some extra attack with the Walnut top an back, an the Ebony central laminate is well... Ebony! Lots of fundamental sustain and general deep bass tone galore.
Tom, I think your friend's ROgue might be the fir Rogue we made with an omega cut. That was a really cool bass!