Re: 2014 Futura Les Paul - pickup recommendations
A P90 can't be RWRP with a humbucker. You'd have to split it for it to do that.
It always affects phase, and the Futura
does have a coil split, so both are relevant concerns for OP.
Though even without a split, you
can get a
slight reduction in hum when using a P-90 with both coils of the humbucker, if the humbucker is a warmer and more dominant wind, just as it will also take some of the treble out too. Fun things also happen if the humbucker has significantly mismatched coils or if its wired up parallel. The DM Bluesbucker cancels a lot of the hum with a neck P-90, for example. This is why SD makes some of the hum-cancelling stacked single coil models with RWRP versions. There are
degrees of hum-cancelling; it's not just an all-or-nothing situation.
As it happens I have a Tele Deluxe on my bench right now that the owner tried to install an Invader and Phat Cat in. Problem is they bought a
bridge Phat Cat, hoping it would balance better with the Invader. In a way they succeeded... silence is a kind of "balance", right? The middle position is not just out of phase, but is the
most phase-cancelled tone I've heard. Or not heard, as the case may be. It's practically a killswitch. That's a big problem, and one they wouldn't now be paying for me to put right if they'd just used the neck Phat Cat instead.
but it can be a nightmare splicing in a new un-crimped pickup into the mix.
If you really can't face it but did want to keep the boost, splits and so on, there are lots of people on eBay selling premade cables with the right connectors, colour-coded for SD-to-Gibson and they're entirely up-to-date. You can just solder + heatshrink them to the pickup and clip it in. I haven't seen Gibson change their colour coding since 2012, so your Futura should be fine to use those.
I do get the appeal of ripping the boards out and putting in regular pots, it's just one of those things I think should always be thought through very carefully because it's time and money spent doing something that doesn't affect the end tone. I got tired, years ago, of pulling PCBs out for people and then having them complaining that I must have done it wrong because they can't hear a difference. Now when someone asks for it I warn them upfront. I wouldn't
choose to use PCBs in the first place, either, but if they're there and they're getting the job done then... well, you get the point. I'd just feel my answer was incomplete if I didn't crush some hopes and dreams.