(You'll gather from this question that my knowledge of how a humucker is actually physically constituted is as yet unborn...)
On a theoretical level, would it be possible to take an L-2000 pickup, divide it into two halves and then fit them into a pair of soapbar shells? (Or take two L-2000 pickups and remove a coil)
If my Yamaha TRBX had been able to sound anything like the inner coils of a L-2000 I would still have it.
Electrically, I would say yes, since they can be run in series or parallel, and the leads for both coils are connected to external wires.
magnetically (if I remember right) there is a bar magnet for each coil, so should be possible.
physically, I dunno.