When Pirastro first brought out their pizzicato strings i tried them on my little 3/4 size Dolling bass, left them on for a couple of weeks as you are supposed to and used them gigging for a couple of weeks, before deciding that they were going out of tune too much to be my working string. I put metal strings back on.
A few months later, my big German bass (19th century no name) was back from the repairers . It had had a new front put on(major stuff) by Bridgewood and Neitzert, here in London, as the front had collapsed twice in as many years.
I thought i would try the gut strings again, just to see what the bass sounded like. It sounded amazing. I've had them on for a couple of months now, and they just seem to get better and better. The tuning problem went away after a few days, and I can take it out of the case for the gig and it is still in tune from the last gig. It was the other bass that didn't work with the strings. I play quite a bit with singers, so tuning is a priority, and it has not been a problem with this bass. I do tend to check my tuning more regularly and they need an occasional tweak more than metal strings, but not after every number, and not at all as much as they did with the other bass. The Dolling is a good workhorse, a good bass, but prefers metal strings .
You might be in the same position. There is not one definitive bass sound, different things work for different basses and different people, which I am sure you know. I will still use my Dolling, Although I think I play differently on each bass.