My primary use is light bushcraft. Woodworking. General chores. Outdoorsy.
I usually I have my multitool in a canvas shoulder bag. Never on a belt, or clipped to a pocket. I do clip a tool to a handy place inside a pack sometimes.
Why more than one Multitool? They are useful kit, but let's face it, they are also man-toys. And, quality control is far from perfect, and the return time for warranty work is a few months from Israel. Thus having two is a minimum for anyone needing a Multitool for work.
Mostly, however, I love small, non-electric mechanical devices. Though 45 or so multitools is enough, given that I am not enamored of the new Free line. And I pretty done with SOG, and definitely with Gerber. SOG pliers I do like, but that's it. I don't mind a good warrant, but I'd rather better QC at the factory.
Leatherman...
...and Victorinox, because my 20 year old SwissTool is still going strong. So I bought a Spirit, and a new SwissTool. They are engineering marvels.