My s.a.k. serves a range of functions. I've had it for about 10 years now, having had it repaired once. In my form of witchcraft we have a "black handled knife" for doing ritual stuff with, and a "white handled knife" for doing work with. My s.a.k. has a white handle.. so I use that. If you need a working knife you might as well get one that's up to the job! I have, however, been asked to leave some pompus rituals when producing it.
I wouldn't be without mine, or my Victorinox Swiss Tool thing.