I mentioned to the troop leader that I had read a thread about some troops completely forbidding knives all together. He gave me the strangest look and said "How in the world do they qualify for many of the scout skills if they are not allowed to use knives?" We boith just shrugged. For the most part all the kids in my son's troop use folding pocket knives. Sheath knives can be a little more touchy becasue you know some kid is gonna show up with a Rambo 2 bowie knife.

That is not to say they are not allowed but it requires more policing. The most common knife I saw at camp was an SAK and unfortunately some really crappy SAK import knock offs.
There is a LOT of lattitude in the way a troop is run. If a troop in your area sucks check out some of the others around there is likley to be a variety the way they do things. We have a lot of people from different areas in the troop we are involved with because they like the way the troop is run better than ones in their immediatre area.