Re: your top three users . . .
1. Always - SAK Classic with main blade reground to a micro-
Seax for better piercing/picking. (note to self: picking is NOT prying . . .).
2. Benchmade 710 HS for one-hand opening/closing, easy deep-pocket carry and all-around ugliness. Dings, scratches, gouges etc. on handle/blade actually IMPROVE the looks.
3. Leatherman Squirt PS (pliers - because SAK Classic lacks, plus picks, screwdrive blades and file! ). Blade reground to mini-Seax shape.