I still love the Cruisers in my 560. Single sized humbuckers are REALLY sweet
Do you have one and how does it sound?
Does it sound like a full sized humbucker? If it does then I am game.
I did have a Duncan Hot Rails and while it had midrange, it lacked the bass a full humbucker is known for.
I may put one in my ESP Viper which has the two full sized humbuckers. Since it's like most of their models and has 24 frets, the full sized humbucker in the neck lacks the full fatness opposed to where it would be better placed in a 22 fret neck. Those extra two frets push the neck humbucker too close to the middle.
I would use a pickguard my luthier could make and place both pickups on that and move the cruiser about 1/2" inch closer to the neck than where the full sized humbucker lies. I hope I can do this and get a bassier sound and get close to the sound of a full sized humbucker as found on a 22 fret guitar. Joe Satriani describes just this scenario and thus why he used the Cruiser for his 24 fret model.
Also I would want to put a phase reversal push pull pot so I figure since the Cruiser is four conductor wiring, it would be treated the same as a four conductor wired full sized humbucker. I would want to reverse phase when both pickups are on to cancel some frequencies and get some non-hum, Fender like sounds.
Other than employing a cruiser, maybe there's a really, really fat neck humbucker being put on a 24 fret neck out there that can sound like a regular humbucker on a 22 fret neck. I am sure Joe tried those options. Some old school, Norlin era Gibson humbuckers had really fat sounding tones in the neck position and too fat for most ears. But nobody observed the possibility of a full two octave neck and where a fat humbucker could actually be a better option.
I also thought of a JB jr or lil '59 in the neck of my guitar but I am sure those two have Fender widths as opposed to the narrower Gibson widths. I like the look of the little JBs and '59s because of the pole pieces but if they don't line up on Gibson width neck, then you lose power and thus the superiority of the blades which can work on Gibson or Fender widths equally well.