Another matter is that the presence of two cats is straining the Zyrtec; my allergies are making their presence known as a rumbling threat in the background, as opposed to being completely at bay. What they'll be like in hay fever season, I cringe to guess at.
So, although we haven't officially decided, it's beginning to look more like we're going to have to find an alternative home for Dasher. It's too bad, because he is a very sweet cat and if we could just turn off Buddha's hate switch they'd probably make great buddies. But it's very clear that Buddha doesn't want a buddy. He wants his people and only his people, and any other cats that try to horn in do so at peril for their lives.