Less of this 'only had P-90's' :shock:
If you play with a good set of P-90's you will see why Tony Iommi used them (along with a lot of other great guitar players in the late 60's and early 70's).
I actually put some BK P-90's into my PRS EG to replace the Duncan single coils (and a Crawler to replace the Standard Treble). Everyone who tries the guitar is knocked out by the sound. I also have 2 LP Juniors, 1 SG junior, 1 LP Special, a 54 Goldtop Reissue and a 55 Custom Reissue all with P-90's.
Give them a try before you knock them, you will be very surprised.