The first couple of Strykers had a 2+2 headstock, but they changed it to the Buzzard headstock. The first years you could by mahogany ones with a visible maple neck through or ones with the ziricote (indeed) top. First proto's of the reversed one for Adam Clayton head a ziricote top too and I believe he will play one next tour.. U2 tour is postponed due to back problems of Bono though...
After the humbucker loaded Alembics, JAE went to Warwick which made the 'mirrored P' Buzzards. So you can call this a bit of a hybrid between a Buzzard and an Alembic. Or the bass JAE never played...+