Quite tempted to do this mod: P with MM (in the right placement)

[fretmeister]

 

 

I wouldn't have quite as many switching options though. 

 

Just P / P+MM / MM

 

And then have a series / parallel on the MM only.

I have a good MM pickup lying about already...

[Paul S]

I did it the other way around ie had a MM Sterling into which I had @Andyjr1515 graft a P pickup.  Had to have the P bits reversed a la Yamaha to fit into the sweet spot as I recall.  Very nice it was too.

[wateroftyne]

My Maryszczyk Jake, factory PMM. All-passive, Vol / Vol / Tone. 
 

Nice and simple, well balanced, sounds immense. If anything happened to it, I’d get another.