For the last three decades I have been a Leatherman carrier, but for many years before that, I fond a SAK to be a very useful tool, in both wilderness and urban settings. They are not the tool to be used in a major project, but they will save time, steps, and energy when something needs tightening, adjustment, or trimming. Mine were usefully employed on many climbs and backpacks. They also have a "friendly" appearance, less threatening in an urban/office setting, unlike the even more useful L-tool.

No SAK should be deployed to scrape nostrils - that would be ever so gross, but the typical slot screwdriver can do well in removing excessive ear wax - do not employ the phillips head for this activity....