And the best part about a middle position pickup used in that manner, darren, is that you can vary the pitch of the note by varying the pressure you're holding the string down with. You can get some crazy high-pitched bending sounds that way.
Still doesn't change the fact that i'm not fully convinced of this thing's ability to intonate correctly, it looks ugly as hell, and you can get the same effect (with a much better crowd response) out of an empty beer bottle or shot glass. Hell, with an Edge trem, you can just rip out the whammy bar and use THAT.
And i can't take anyone seriously who goes by the nickname "Fret" because he invented an "extra fret" device. That's borderline OCD.