The SAK is always in my left pocket as there is usually a larger knife clipped to my right. So the blades on the SAK are rarely used and the secondary tools become the focus.
The larger scissors like on the compact and Deluxe Tinker have a multitude of uses. Mine are usually found cutting fishing line, assorted things around the house, and straws down to fit in margarita glasses better. You can take the bit you cut off the straw and make a whistle out of it, great fun for the kids at the table. Pliers have become almost as loved. Between the tweezers and pliers you can manipulate all kinds of small and medium sized things. Pliers can also be used to crimp, bend, and pickup hot things. Don't carry a leatherman type multitool as the tools are too big to be convenient and too small to be useful. I have often found myself breaking and abusing leatherman sized tools by asking too much of them. The Smaller SAK tools are not only convenient but small enough to remind one of their limits. If the SAK can't do it I'll go grab the toolbag.
Back to the compact, I go back and forth on my preference for the multi can opener/caplifter or the dedicated ones on the other models.