Voodoo Tactical makes a case that holds two long guns, two handguns and cmagazines. I have one that I carry my AR and handguns to the range, very nice. I got one from the NRA store, non logo version available. Exellent case IMO and nicer than the one you link to.
46-inch MOLLE Soft Rifle Case, Padded Weapon Bag with Backpack Straps