I'm thinking of getting a Leatherman and I have narrowed it down to the Core or the Supertool. I like the lighter weight and the cutouts for the blades on the Supertool. However the removable cutters worry me a bit. It seems like any advantage gained by being able to service them will be lost by a greater likelyhood of them being damaged or coming loose. Can anyone comment on that concern or voice their opinion on how the two stack up against each other?