No, some great news.
I was in the bedroom last evening and looked out front. There was a cat pooping in the yard. It was Gem! Yay!
The last time I saw him, in front of the garage, I noticed that his testicles didn't seem so big. And we haven't heard him callling in months. I'm thinking he does have a forever home even though they don't keep him inside. But they did get him fixed and now, he no longer has those urges and is much quieter.
Brian said the poop looked pretty good (he saw it this morning).