I don't really know what I expected when I started this thread - I expected there to be at least a little bit of anti-pick sentiment. I think it is still alive and well elsewhere, but good to see that the Last Bass Outposters are much more open-minded and realistic!
Personally, I play differently depending on the technique I am using, and I consider that a good thing. My favorite right now is pick with flats on my Alembic. Other pick/flatwounds players that I like are early Phil Lesh & current Mike Gordon, though of course there are others (Joe Osborn for example, though I don't consider him an influence). Anthony Jackson is a player who switches between pick and fingers depending on what the song calls for, which I found influential at one point (Al DiMeola's Casino & Electric Rendezvous being my favorites).
For a while I experimented with different materials - I have a pick made from bone, some wooden ones, and my favorite: woolly mammoth tusk! Usually now I use really heavy Dunlop Alligator picks (usually 2.00 mm+).
This has been fun - loved Dave's insight into the possible origins of anti-pick prejudice in the early days of the electric bass. But I'm glad that it's fading away.