Re: P-rails neck with Hot rails bridge
P-Rails in the neck is an absolute fabulous pup. So many really good sounding choices. Yes, Joe Pass could make some wonderful jazz music on the neck pup...and not just the P-90 coil.
As for the HR in the bridge, it's a pup I personally haven't tried but certainly will one of these days. If for nothing else, at least to satisfy my curiosity. It fills a niche. If it's your thing for the type of music you play then you are going to love it. But no matter what, the neck P-Rails is going to get you where you want to go.
Sounds like a good combo to me.