yes you can do that, normally the hooking action takes priority over the DS action - at least it used to, because the killer was already locked into animation.
We have said that the skins from the Rift will be available in Store at some point but not for at least 6 months. Nurse was the first outfit to go from the Rift to the Store I believe.
And both the Feng and the Clown skin were Community Designed skins - they are for the entire Community.