I'm sure someone can come up with a few negatives, but the only one I can think of in the context of your question is the weight of a 12 ga. Super with 28" bbls for pheasant hunting. I'm guessing this configuration to weigh about 7.5 lbs... which can get heavy walking around with for hours in heavy cover. I use a 20 ga. Super with 26" bbls (cir. mid 60's) and it's easy to walk all day with. I'm a big fan of the Superposed.

-jmc