Fretless can be a challenge on the bass. I gotta think it would be a nightmare on an electric. Whenever I need to play double stops or chords on my fretless bass, I usually watch the fret lines to protect intonation. THAT THING DOESN’T EVEN HAVE FRET LINES.
It does look really nice though.
Cool ... I've been playing fretless for 50 years ( Bass and fiddle) it is a bit more challenging at first but the nuances gained are worth it.
I rarely play my fretted bass. Playing slide ( which I do a lot) is essentially fretless too. Don't be shy , let it fly !