I have a JS100 which I replaced the original stock Ibanez "suck" pickups for a Pearly Gates on the neck and a TB6 on the bridge.
Sounds amazing now ! Really, the Pearly Gates is a wondeful pickup to use on the
neck position on a JS guitar. Warm, harmonics, full ... cool
Go for it ! For me it sounds better than the
PAF Pro, but that's my opinion ...