Fretless Bass VI

Chords would be about as easy as on any fretless guitar or oud or related instrument - that is to say, fiendishly difficult and requiring more talent than I can muster. But yeah, have at it. (You don't want to hear what I sound like on my fretless 8 string (4 courses of 2) bass, neither!

 

OP, I agree with @bholder . With shorter distances between frets, it'll be more difficult to hit the proper note(s). If you attempt chords, you need to nail a number of notes simultaneously. It's not impossible, but it'll take a lot of dedicated practice on your part.

I'm not sure where you'll locate a fretless Bass VI, unless you plan to defret an existing one or if you're going with a custom builder.

 

here's a fretless bass VI. though it may have been fretted recently...