you know what's funny (or not really, and also not particularly interesting either) . . .
I'm kin'a spoiled/biased about that.
Electric guitar and bass are played in a truly stupid position (ergonomically, I mean).
I can really get into fretless when the neck of the instrument is vertical, my elbow is in good position, and thusly my wrist, and then the fingering is basically truly perpendicular to the fretboard.
Slung low and sideways, it's just way too awkward and I thank god for the frets so that I can just land somewhere in the area code of the notes I want to play.
When I played acoustic guitar, I would compose and play in proper classical seated position, and then my finn'ers could do like they were supposed to do.
If/when I play electric guit or bass, I don't play the same music or the same style.
I have much respect for those who can play electric fretless bass