I'm the only one who works in my office, so if I want to roll into work with an AR-15 with bayonet fixed, that's totally cool. These days I carry a Benchmade Rukus or other large folder, because I can, as well as a slipjoint of some sort. Today it happens to be a Buck stockman. I keep a SAK with a lanyard hanging off a peg on my desk, and use that for general office tinkering. Works great for opening canned lunch.
I'm pretty unsophisticated when it comes to blade shapes. I've never been able to detect a functional advantage of a sheepfoot vs. spey vs. clip blade profile, given comparable size, sharpness etc. It doesn't really matter unless you get into heavy cutting. For which you need a bigger knife anyway. Generally speaking, for office use, any blade shape will do 99% of the cutting you need to do. The main requirements being:
A) sharp
B) somewhat pointy
(in no particular order)
X-acto knives work great for cutting things, and they're totally sheeple friendly. As are box cutters/ utility knives.
Actually, the only real "EEK!" response I've received from a non-knifer was when I pulled out my Case large stockman (CV, with amber bone scales). I couldn't believe it! I've used big folders for years and nobody ever noticed or said anything until I tried to use one of the classiest, least threatening knives I own. I guess because it's shiny and decent-sized, they thought it was some kind of pimp switchblade or something.