Re: P-Rails in an alder bodied, maple necked, guitar?
Well... Kinda. They're really their own beast. I reversed the bridge pickup for a bit to get a more tele-ish sound out of the rail coil, and with brass saddles, it was definitely more tele than strat. I switched it back for the in-between sounds though. If you want them to do tele, flip them so that the rails are facing outwards, and they are strongly reminiscent (in single coil mode) of a tele with a strat neck pickup. If you have an angled bridge route, even more so.
The thing is, they're really more about the p-90 sounds than the rails sounds, IMO. The p-90s sound better, and I found myself staying in that configuration most of the time. Hence why I reverted to normal orientation, as I already have a strat and don't need the rails to be spot on.
They're great if you want a guitar that can give you several convincing sounds: The in-between sound you normally get on positions 2 and 4 on a strat, vintage-hot humbucker sounds (yet more open than vintage output humbuckers), PAF sounds while in series, and the piece de resistance, the P-90 sounds. Bright and snarly in the bridge, bright and fat in the neck, and huge sounding in the middle position with wonderful detail that you can really only get with p-90's.
They're a unique beast, but if you want telecaster sounds in a humbucker-sized pickup, flip the bridge and wire a split switch for the neck. But they'll still sound different than a tele, because there's no brass base plate, no pole-piece mags, different resistance, etc. The best you can do with them is an approximation.
