Me too, had high hopes, basic chemistry may play a role here, they did not just mellow, they went dead overnight after a rehearsal all of the strings not just one.
The bass did go from a warm house (rehearsal) to sitting in a car at below freezing for dinner for couple hours, then back to a warm house without being removed from the gig bag....
over time (i was playing the bass with them daily for several hours) i was also just not digging the grippy feel. I may try them again in the future?
Replaced with Dunlop Super Brights just this moment ($22 at GeetarCenter) another experiment