In reply to iamthegodoflochnagar:
"all of my friends use a fishermans knot but i'd like to be a bit different,"
Dbl fishermans is strong, safe and reliable, and in numerous strength tests has outperformed every other knot. I've always worked on the basis that being alive but following what is best (which co-incidentally is what everyone else uses) is better than being different but dead...
As another said, coloured tape is the way forward?
In any case, how often do you use a prussik? Mine have been hanging off the back of my harness for years, and I hope that will remain the case for many years yet...