While far, far away from the IT world I have 3 designs that seem pretty close to what you are talking about. First is the Gordo, (Spanish slang around here for chubby boy), 5.25" oal with 2" blade:
Make em out of stainless too and then they are called...wait for it.... The Stainless Gordo: (AEB-L @62)
One in Ironwood playing prop for this holster pic:
I sell a bunch of these, mostly waaay outside the IT world but they are handy for us. My son using one castrating this calf:
I carry one too as my own personal EDC. After a long day of branding:
The wife does too:
I make a variation that is even smaller. I call this the "Poco" which is Dave Spanish for not enough steel left to make another Gordo. Usually under 5" oal and under 2" blade. The specs vary because its made out of left over steel. These are also extremely popular.
A couple in some of Hoss's steel:
Couple more in Damasteel:
The third thought is my Vaquero. I make this with or without a handle. With out the handle its called a Vaquero Ultralite. This one is also 5.25" oal with a blade of 2". Just a little straighter design than the Gordo. With a handle:
Without, the Vaquero Ultralite:
Because of its flatness its an ideal candidate for a boot sheath type carry that can be tucked in any pocket or waist band.
Hope this helps with ideas. The why? Because they are always with you so you have it when ya need it. Big enough to really do anything that needs doing, small enough ya got it with ya. For us in the ranching world, having that small little sharp knife with you all the time is a safety deal. You can get into what we call "live action cowboy shi.."
I have cut 3 guys and 4 horses out of wrecks and I've sold quite a few knives the day after wrecks. I have been reaching for it myself a couple of times when things worked out. Like I said way far away from IT. Between the 3 designs I've probably sold a couple thousand of these little guys with the Gordo being the most popular, so I'm not alone in thinking they are handy.