I'm an Eagle. Finished in about 1985, and did lots of outdoor/wilderness stuff in connection with Scouts back in the '70s-'80s. Lots of us carried sheath knives back then. I remember seeing fixed-blade Buck Specials, a few Camillus pilot's survival knives (I carried a knock-off of one of those, as I couldn't afford the Camillus); I remember seeing one Solingen-made knife with a pewter eagle-head pommel, of a kind that I'd seen marketed in, I believe, Scouting's "Boy's Life" Magazine. Most of the kids used BSA folding knives on a regular basis, and only carried the bigger stuff for outings. Our outings, by the way, were usually done by my troop alone--so it was just us and our dads, rather than BSA bureaucrats setting the rules. We were a pretty wilderness and hiking and survival-oriented troop, so spent a lot of time where there weren't other people.
I distinctly remember seeing in the OLD Scout Fieldbook (I think vintage early 1960s, and thus old even when I was in Scouts) a statement that a fixed blade had "more romantic appeal than practical value" for most people, though it was grudgingly admitted that a fixed blade could be handy around a camp kitchen. The pictured knife was the official BSA Western/Case variety, with a stacked-leather handle and (I think) aluminum pommel.
Sigh. Not sure what Scouting is coming to, these days. Just yesterday, my eldest son (age 7) needed a picture of his favorite activity for a poster for his (private, Christian) school. He'd decided "exploring" was his activity of choice, so we decided to pose him, standing against a leafy background, wearing a canvas hat with brim half snapped up, Aussie style, wearing binoculars, pointing off into the distance. He draped a rubber snake around his neck for effect. To complete the picture, I was going to strap an 18-inch Himalayan Imports khukuri to his belt, but he nixed that idea, saying that since the picture was for school, he was uncomfortable with showing a knife. (Sigh.) I'm glad he has that instinct for keeping out of trouble, I guess. (It's not that he's any kind of weapons-phobe, either--we'd just gotten back from the National Muzzleloading Rifle Association's Western National Shoot mere minutes before, and he was eager to try the khukuri against a mesquite log, and loves using knives, tomahawks, etc. for bushcraft practice in the back yard.)