In all honesty, I don't know, or if I'll even do it. I'll see when I've had a play.
I've always fancied a reverse P and this would make a great trial bass, was my thinking.
Looking at pictures I think I'd just swap the E/A and D/G around.
If the E/A was simply placed below the D/G, it would look nasty as it would be half in half out of the scratchplate.
If the other way then the whole pickup would be too close to the neck I think.
Looking at the space available, I don't think there's room for a double P in the scratchplate, not without looking cluttered anyway.