I've had a few SAK's over the decades that I have been a sakkist. Once in a while I used them, but it was rare and to honest I think I could number the events on one hand with a few fingers left over. I ended up dup gifting off my bigger SAk's with more than two layers in my aging process. Now I don't have a SAk with a saw blade. If I go camping theres a real folding saw in the car emergency kit in the truck that is a real saw. I just don't find the saw that useful in my real world life as a city guy.
BUT...scissors are a very good thing. A knife blade is not good for trimming nose hair, mustache, a chipped/broken nail, cutting a piece of rubber inner tube to a precise shape for a gasket in a makeshift repair, cutting few hairs to get a burr our of the long fur of a Australian shepherd, snipping thread when making a new fishing lure, snipping a long strip off a clean folded up bandana to make a bandage wrap for the grandchild's finger when a boo-boo happened and there wasn't a real bandaid around. He wore it proudly telling mommy all about it when we got home. In fact, after a cleaning he refused a real bandaid and wanted one of grandpa's bandana finger wraps in the blue paisley. Memories like that are priceless. Plus he learned how to make a bandage from a bandana using a small SAK scissors.
My daily carry is a little classic, and the scissors are a must. But when teamed up with my old Wenger Si, that has no saw or scissors, the duo make a powerful team, and I like having the scissors on my everyday really everyday carry. But I never miss having a saw. If I didn't carry the classic and SI. I'd go with a Pioneer X, and leave it at that. If I'm out in the woods and need a saw, (the only time I'd really need it and not have my workshop available,) then the Fiskars sliding bade saw in my day pack will do. It will go thorough a 2 inch tree limb or sapling like a beaver on crack. The SAK saw is too small to be really useful unless small diameter stuff that can be cut through with a knife using the right technique.
Scissors yes, saw no.