I've always prefered the look with the lack of a hopper. Personally I'm a fan of modified stock class. Smaller, lighter and looks better without the loader.

Besides, if you have a hopper on there, you might as well shoot a semi cuz at this point that's all you have; a slow "semi" looking set up and less stable shooting platform cuz auto-triggering's gonna have your barrel shaking all over. And besides, timmies and egos have prettier milling.