All Sadowsky basses have the same electronics for a given model (JJ4, JJ5, PJ4, PJ5, SC vs HC, etc).No but it's possible. I wasn't sure if the same electronics are in both as well.
Man, when you're getting into body shapes affecting tone, I'd think you're getting into splitting hairs to the point that even two specific cuts of wood with differing density and/or grain pattern... even within the same species of wood, have to also be considered... in fact, probably more than the body shape IMHO.
I would expect, especially with Roger's tendency towards tonal consistency within a given wood combo, that the body shape wouldn't matter appreciably.