Heh....of course.
I guess, I don't like thinking I just play certain styles of music, I want to be competant in as many styles as possible, so I make sure I know as many techiques as possible.
the one technique I practice, but rarely use is tapping, sure every once in a while I might tap a couple notes in a solo, but never any of the tap lines I practice.
I actually use double thump when I jam with friends, so while it isn't very musical(

)
I do it because it's fun!
believe it or not, but I have fun, doing syncopations with double thumb, it's very...satisfying, I was a drummer before I turned bassist, and I've always had a soft spot for playing with rhythm, complex or otherwise.
I also rarely pinch harmonics in my playing, but I practice those too
