Dual Wield and grenade/rocket launcher

I can get behind dual wielding some of the pistols. Not so much the grenade/rocket launcher though. Grenades are just as important as ammo and healing in this game, and if a team is holed up inside a building then they're at an extreme disadvantage if your team is holding 4-6 grenades each. That's why doors can be blown up and why there are so many windows or gaps in the walls and roofs of every building so people can't just set up shop and camp without being punished. Not a lot of people seem to realize that you're not very safe inside a building, maybe safe enough to get a few heals off but that's about it.