FWIW, a coupla' more fretless favorites:
Richard Bona w/ Pat Metheny.
Anyway, on fretless in general. Just do it. Everyone should at least experiment. And play with others - get out of the living room to discover your comfort zone. Heck, that applies in general, but realizing that you CAN play in tune with others will give you tons of confidence. And I guarantee you, if I can do it...you can do it.
Fretless Roscoes. Nuttin' like 'em. I've owned three of 'em now, and all are magnificent instruments. Took awhile for my stubbornness to subside, but once I accepted that I need lines on a 35" scale fretless neck, it opened up an awful lot of music for me. IME/IMO, my only recommendation would be to consider your woods and electronics carefully. The harder the better. Mine has an ash body and a myrtle top, along with Bart pickups and an Aguilar pre. The upper mids on this bass are just remarkable, yet there is gobs of bottom end and high sparkle that I never worry about getting lost...in any mix.
Sorry for the long post - catching up after a long week. Bottom line - listen to Steve and Pete.

Fretless, more than any other variable, exposes you. You'll have to "fail" now and then...and if you're at all like me, you will.

But..you'll realize that it's not the end of the world, and the sonic possibilities will take your music to a whole new level.