You could remove the covers and buy two bezels!
I don't see the need for the two bridge pickups, beyond aesthetics. They have the same single coil setup as a conventional neck pickup. They simply have a wacky way of mounting and adjusting. It is bad enough having to wrestle with one, but two seems overkill. A lot of routing in that body that isn't really necessary.
The bass works for Al Cisneros as he never plays down there anyway. In terms of signature instruments, they've given him what he wanted from a bass, rather than a replica of what he already plays.
...which is a shame as I love that unusual green sparkle bass he played early on in Sleep:
Link Removed
To go with the green amps and green Space Echo. Presumably this was a refinished bass.