Well if you haven't already figured out, yes, Hawk's is your best bet to get your ass filled to the brim with loads. The dark room there is good for anonymous breeding, but they now also have glory holes in back, which is my particualr favorite - I love to get fucked through the glory hole. If a Top there wants to glove up, he'll do so, but I've taken many a bareback slime injection up my ass at Hawk's.
The Vault has the potential to be a great sleaze palace. It has something that I've never seen in a sex club which are glory holes with porn videos playing in them. They just need to get on the map. I've been to the Vault but at hours that were way too early; I'm planning on hiting it up after midnight some Saturday, lubing my ass and backing up to one of the holes.
Happy load hunting!