The Crawler and the Diver are both middy pickups, the Diver more modern sounding, where the Crawler has some vintage flavour. I have the Crawler in an swampash MXG Custom Strat (by Patrick Eggle) and you can consider this one as hotrodded Abraxas or a supercharged Mule. It has still PAF-pedigree but with more oomph and a bit more compression then the Mule and Abraxas. Reallly nice for soloing. Tones are sweet and fat, topend is round but not dull or lacking treble. Above the 12th fret tones keep their weight. With drive this pickup really growls. Cleans up very good and splitted the result with the middle-IT is very pleasing. Real Fender-quack. Excellent allrounder. Takes any drive- or distortionpedal well. I think the Crawler excels in (ash and alder) bolt-on guitars.
Very good post there.
When I was gigging a lot a few years ago if I could only take 1 guitar with me then it was always my HSS Strat with Crawler/Irish Tour/Irish Tour.
I consider the Crawler 1 of the most versatile pickups in the BKP lineup, in the right guitar ofcourse. Not that the others aren't, but I always found the Crawler to be very versatile.
It also splits really well too so you don't have to lose your bridge single tone.