I bit the bullet and gave it a shot. In 5 stockings I got blue chimes x1, 10x cps, 5x anbu yamato, 5x hanabi, and I can't remember the last drop but wasn't anything special. Also in 10 packs I didn't get a single ninja frag. I'd advise staying away from the stockings. There could be something really amazing hiding in the remaining stockings, but I don't know that testing your luck would be worth it.

Edit: Just remembered the last one was a snowman decoration for the tree.