Exclusively fretless? Almost, but not intentionally.
I love bass. All kinds of basses. I have really nice 4, 5 and 6 string fretted basses. But, as soon as people find out I can play Electric Upright and Fretless, that's what they want me to play. I'm lucky to occasionally bring the 5 string fretted bass out for a few songs saying that the particular tune is so much better on a fretted bass. Fretted bass players are readily available. I like to think that I'm still good enough to compete on that alone, but there aren't as many good fretless players. As I've gotten older, my opportunities have dwindled a bit (ageism is very real in the music biz) so I'm mostly playing Jazz these days where age doesn't matter much if you can read and play. I think I'm a better fretted player, but since all my jams and gigs are heavily fretless, I'm definitely getting a lot better at it and audiences love it.
It's always been said that you can't pick your audience. They pick you and sometimes you might get close to what you want, but certainly not guaranteed. I guess you can also add that you don't always get to pick your instrument either. You get picked for what is needed.
Go for the fretless and work on your intonation and develop your own voice with it and you'll be a better bass player and worth more to a band, even if you still mostly play fretted. They might really dig doing a few fretless backed tunes or they might just like it more for the novelty and one more gimmick as part of the entertainment. In any case, adding fretless to your skill set, makes you a more desirable bass player against the competition. Or you might get gigs exclusively or mostly playing fretless.