Just One
I have exactly one Glock field knife.
It is the only knife I own on which I've never been able to establish a decent cutting edge.
The handle, unhappily, is round but not terribly grippy.
It is probably the best crowbar knife I own. I do believe I could pry open a car door with it and do little damage to it, if any.
So, yes, I have one of those. I won't have another.
Odds are, despite my aversion to selling knives, it will be one of the few I ever sell or trade.
Now, if I ever need to dig a trench, and I need a really terrible shovel, I already have a cheap Bowie knife that's larger than the Glock.