Taco and Nacho are bonded and must remain together. They must be the only cats in the home.
Neither of the cats are really cuddly. They allow you to pick them up to hold them, clip their nails, but look very awkward. They also have a freeze or flee attitude towards humans. They don't hiss or bite us at all. Never heard them hiss.
Nacho is the more likely to sleep on a bed with you but tends to leave and go to the cat bed his sister is in or near.