I have the same 2 cats. Yesterday I was bitching about them to my niece. Saying they got so bad, it's like I'm the pet and they're the owners.
They really push me around and make me do whatever they want. The tuxedo even follows me around when I'm cleaning and grumbles and shouts when their 3 litter boxes aren't cleaned 3 times a day. There's no use getting stricter, it's 2 against 1 and I don't have a fluffy belly to trick them.