I don't know what's more disturbing, the fact that Mossberg made that, or the fact that I have heard the term tactical lever action before and have seen people take a lever action and set it up as a modern fighting rifle? Isn't as bad as the Tactical side by side though or the pistol bayonet, though it is about as useful in my opinion.
I'm not surprised. Although, you're going to have a hard time mounting a decent scope with that top-eject system. At least Marlin got it right with the side-eject .30-30.