A tapped pickup has an extra lead attached, which allows you to use only a partial amount of the coil - in my case, roughly half. This, in effect, means I can run my pickup with half power (10k worth of the coil rather than 21k). I use a push/pull pot to achieve this. It's similar to using a coil split on a humbucker, but technically quite a different thing; which is why it drives me mad when people describe a coil split as "tapped". :lol: I wouldn't describe the tapped tone as fendery, exactly, but it certainly has p90 ish single coil character and lovely cleans. There was a small upcharge by the way, I believe I paid £5 extra for the tap last year.
As far as the difference between ebony and rosewood, ebony to me has a more immediate attack, whilst rosewood tends to be warmer. For example, I have another guitar, mahogany neck through with a rosewood fretboard and a floyd, and that's a lot darker/warmer guitar in general. It's all relative though, there's no telling how a guitar will sound until you actually play it yourself.
All that being said, chances are, if the guys @ BKP have reccomended the pickup to you, it will sound great.
