I’ve yet to see a single reference to our Colonial forebears using belt knives to clear brush in the regular course of events. Fascine knives, tobacco knives, bill hooks, hatchets, axes, and tomahawks, yes. But not belt knives.
Pocketknives have been the constant companion of most men since the days of the Roman Empire. (See attached photo of a 3rd century “Swiss Army” type knife as one -admittedly non-typical - example.) This one is 17th C-
https://www.metmuseum.org/art/collection/search/187636
Good article on Barlow knives (yes, they’re colonial) here-
Colonial Pocket & Folding Knives – History of the Barlow Knife
And I highly recommend Jim Mullins’ book “Of Sorts For Provincials,” and his blog, which has this great article on the cuttoe.
Cuttoe Knives Revealed
Having carried both a pocketknife and a belt knife daily in both my
modern and colonial clothes for over 35 years, I find that both are indispensable.
Jay