I can confirm this. Years back I had those (now deceased) two cats who liked to get under the blankets while we were sleeping, but apparently they liked me more than my girlfriend, so until they decided to leave I had those furry warmers lying down along my legs, one here and one there. A couple more cats along my arms and I could easily turn off the heater. House is small though, so max 2 cats at a time to avoid hygiene related issues.
These days I have two different cats; one loves sleeping between my torso and the right arm keeping his head on my shoulder, pretty much like a baby, and the other one from time to time climbs on my belly to sleep there after asking permission with a soft meow. Luckily he isn't the fatter of the two:)
Cats are incredible.
