The A-Bomb is certainly one of the best pickups for hardcore of all kinds, the other being the Stockholm. I have both, and I only recommended the Stockholm because it tends to be more forgiving relative to what guitar you put it in, but the A-bomb also works in a lot of guitars. I just doesn't work well in most SGs. What I would do is write to Ben at BKP and ask if the A-Bomb would work well in your guitar, remembering to specify the woods in it. If he says that it will work fine in your guitar I would go for that.
The only real issue I ever encountered with A-Bomb is the interaction between its strong mids and low-mids and the strong mid focus of the SG, which makes for overbearing mids. If your guitar is not overly middy acoustically (I've never considered Telecasters to have a strong mid focus like an SG, but your opinion might differ) then it's probably fine. I wouldn't worry about it being too 'bright' or 'dark' ... it seems to work well in both situations. It's really only in very middy guitars that there's an issue.
I don't think though that the difference between alnico and ceramic is one of 'organic' or 'natural' vs 'artificial' or 'processed' - on the whole BKP ceramic pickups are very nice, and at least one of them (the Cold Sweat) even has cleans that surpass some alnico pickups. They do sound 'tighter' though in terms of their response, and tend to be more 'scooped' (this might be what you are hearing in terms of the highs).