[archy]

Fortunately, any of the above would be a good decision. However, I'm thinking that a WWI-era sawtooth bayonet would be especially terrifying to those who deserve to be skewered.

Ah yes. The Swiss M1914 Pioneer's bayonet- Combat Engineer's, to Americans- should do nicely in that role....

http://fmso.leavenworth.army.mil/FMSOPUBS/ISSUES/convoy/convoy.htm

[Noumenon]

Nah - the sawteeth make it too hard to pull it free once you stick in 'em.

These work for me:

I have both the six inch and the nine inch San Mai tantos. They handle as if they have a life of their own. Perhaps they do. Cold Steel makes a mighty fine knife.