So far, so good. He ate his supper with Miralax sprinkles, gobbled it all down, and had a good breakfast too. So far I haven't heard or seen any vomit. He’s bright, chipper, and energetic.
Unfortunately, the detente with Peanut seems to have suffered a setback; he’s back to being wary of Mr. Grumpy Face, who’s back to staring at him, and has returned to lurking in the basement. Hopefully this will wear off along with the smell of the vet’s office.