Not denying any of points above, but I just got a 6004 and I love it.
I don't have a duty rig, nor enough experience to have any opinion - I got the 6004 to take classes with my 1911. The hood is a little strange, but fast if you practice with it.
I don't much like the looks of it, but I like the way it fits my 1911, and I like the mobility and comfort it gives me.
And the holster is tight enough that you could flip the hood forward while still carrying if you wanted - I'm not claiming this is a good idea, just curious whether people do this in the field.