[Silverface]

Although I use Higgins' benders and do want to give one of Paul's a test-drive (since I've played a zillion other brands...) I've never quite understood the "invasive" question.

I'll take a stab at it - I'd guess it's asked by either those with vintage guitars they don't want to modify, or players who view the bender as an "effect" - however, when used well, it's a completely different instrument and not something like an overdrive or phaser.

The bender becomes an organic part of your playing - at least the players I've heard who really "play" b-bender rather than have a guitar with a b-bender on it.

To really play it well takes a commitment.