That's something that I never even thought of.
I look after my basses and guitars... but not to the extent of worrying about *pickguards* getting a few marks with normal use.
But I guess that for those of you who do, it's a much nicer option than leaving the plastic film basses come with from factory, as some do. They look terrible.
TC RH450 #8, MM Stingray #153, EBMM SUB #15, Warwick #325, OLP #13, G&L #411