Maybe it will be in a "defend this position from the onslaught bit?" I imagine one could have fun trying to hit hunters, especially since they move quickly and have alot of health.
As for it taking long to set up a stationary turret, well, look how long it took Civil Protection to put that turret in the canals in Route Kanal. The thing seems quite portable, just a gun and some bars that can be pulled apart to make a forcefield. I'm sure that such a thing would be possible for soldiers to set up as well. I do, however, doubt that the rifle will be pick-up-able, since we've already got the crossbow to fit that niche, and Valve doesn't seem to like clone weapons.
As for it taking long to set up a stationary turret, well, look how long it took Civil Protection to put that turret in the canals in Route Kanal. The thing seems quite portable, just a gun and some bars that can be pulled apart to make a forcefield. I'm sure that such a thing would be possible for soldiers to set up as well. I do, however, doubt that the rifle will be pick-up-able, since we've already got the crossbow to fit that niche, and Valve doesn't seem to like clone weapons.