The Abraxas is a hotrodded Mule, the Crawler has it's own vibe going. I would say a uber PAF, thick and chewy with a lot of mids, but not bland on the high strings. Due to the AV magnet the Crawler still cuts. In a leaner sounding non-mahagony guitar this pickup might do the trick. It has medium output and there is still some vintage vibe. The Crawler splits well to a tele-esque sound. I use it quite a lot. Mind you, it's not metal pickup, more suitable for jazz, pop, rock and hardrock and maybe some early metal. Mine is in a swampash strat with a maple neck and ebony fingerboard. Playing my mainaxe for years now and it can cover many styles. The cleans of the Crawler are happening too.
I have also a VHII in a strat and Mules in Les Paul/tele hybrid. Of course the Mules are more open and less compressed, but don't have a push like the Crawler.
I talked to Ben about that actually, and asked if he would agree that the Abraxas is like a hot rodded Mule and the VHII a hot rodded Riff Raff. He agreed on the former but not the latter, which is interesting considering that the VHII and RR use the same wire but the AB and Mule do not. Apparently coil offset is a very powerful factor, which does make sense.
Regarding the Crawler, I had one in a Suhr Rasmus S100 a few years ago, and I remember thinking it was too sludgy and loose in the bass. At the time I was playing much heavier music than I am now though, and I have actually come to apprecciate a slight bit of sag in the low end (just so it's not surgically tight). That experience is also less relevant because I have a totally different rig now, at the time I had the original Axe FX and now I have two vintage modified Marshalls like I mentioned.
The weird thing is, when I'm in the UK without any amps I really love the Valentine, it's a totally sick guitar to play and I rarely used the aforementioned sick sounding Les Paul here when I had them both here. When I'm in Norway and have access to my amps it's exactly the opposite, the Les Paul just has *that* sound and feel which again makes it more inspiring to play. Honestly I doubt that the Valentine could ever match the LP regardless of pickup, but that is to be expected and of course I do value variety as well.
To summarise, I think I'll go with the Abraxas when I have the cash - it's not exactly a time sensitive matter, the VHII sounds really good and literally tons better than the stock bridge pickup. Maybe I should buy it from BKP regardless of if I can find a used one, so I can return it if it turns out to not make much difference. Anyway, thanks a lot for your responses and I'll let you know what I think when I get it!
Edit 19/02: Literally right after I posted this I started looking at the Crawler again, and I do think the classic rock clip sounds really really good. The high end clarity and snarl sounds closer to lower output humbuckers than for example the Holydiver, to me. I feel quite confident that it would accomplish what I want on the distortion side, but I'm not sure if it will do cleans as well as the VHII. With coil split it definitely would, but because of the wiring in this guitar that would be a pain to wire up, and I wasn't really planning on diving into that. So back to square one, I'll have a word with the BKP team again I think...