I don't wear tight jeans:
11 days, no wash. As for the knuckles... well, I thought I was the only awesome genius to come up with the idea... oh well. Planning to keep it there for a month then removing it. Hopefully a wash a few months later will bring out a subtle fade.
The knuckle should make for a good story in the end since it is a highly illegal concealed weapon that I'm carrying everyday in a major metropolitan city. Ooooooh risky!