I thought I saw somewhere that a company was making a nut and bridge for converting a normal "low action" guitar into a slide guitar..... yeah those strings need to be up off that neck or it simply sounds bad.

It's possible to play a slide on a fret-able guitar, but still, the action should be a tad bit higher than some might like or feel comfortable playing on. Or else your technique has to be superb to avoid the fret noise.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.