An ebow is a great combination with a fretless guitar. It’s not easy to play but it has a unique sound – almost like a ‘pseudo slide guitar’. it allows for non-chromatic slides, which isn’t possible on a regular fretted guitar. I’m hoping to use it as something of a ‘signature sound’ on my upcoming ambient guitar project (to be released at the end of 2018). It has made me learn some new things, as I can’t play the usual ‘licks and riffs’ on it (as I tend to on a regular guitar), which is somewhat refreshing !
Regarding non-ebow playing, a fretless guitar doesn’t sustain like a regular guitar does and playing with spot on intonation gets tricky (particularly higher up the fingerboard) All round, I find it’s a challenge to play, but very interesting nonetheless. With fretless in general, legato lines become very fluid and vibrato becomes much more of a musical parameter.
Here’s my Samick / Greg Bennett guitar, now converted to fretless. It had fret issues and I was about to ditch it, but before I did, I thought I’d have a go at converting it to fretless. I bought a dedicated fret pulling tool, which took the frets our pretty cleanly, then applied five coats (or so) of super glue to thew fingerboard, then a radiused sanding block to sand down the super glue flat (going through a few grit grades of wet and dry). Lastly, a rub down with a polishing compound. It’s not perfect (I think the neck may be slightly warped), but it’s now functional.