Please let us know what your Scoutmaster says. I'd be really really suprised if he recommends a fixed blade knife and/or allows one at Scout functions.

As mentioned before, the Boy Scouts of America's official policy, in the Guide to Safe Scouting, is "Avoid large sheath knives. They are heavy and awkward to carry, and unnecessary for most camp chores except for cleaning fish." While the BSA does not ban fixed blade knives outright, from what I know, most councils (mine included) have indeed banded them from council-owned properties and council-run events.