Maggie has to check out all visitors. Sometimes she's not sure of them at first if they're new, but she never leaves the room. After a couple of short visits, she's usually rubbing up against them. She loves all the pizza delivery guys, LOL.
My Willy was also like that, he never showed up when friends or family came to visit. But no problem with my two new kitties, they are curious and run to the door as soon as anyone rings the bell and they greet anyone like they knew them for years! My postman loves them:))
Well, then let's hope that you won't fall apart so soon ! ;-) What happens when you have guests for longer than a few hours, is there any difference in Mikesch's behavior? Only my Minka and Mietzi loved every guest I had but all the other cats were/are hiding as soon they have heard the door bell. Moritz and Paulinchen are still like that but when my aunt for example stays here for three weeks then they get used to her and after a week they both sit on her lap.
I can absolutely count on a long hiss EVERY time I lift the cover on the bed over Cat Town, from Mikesch, followed now by him relaxing, satisfied that he's done his part as a feral cat, and then waits for his scritches, slowly turning over so I get under his chin and his belly. The fact that I'm the only human, in all the world, that has his trust, is very satisfying! Anyone else in here, and he's a wild, scared feral, finding a place to hide. Tempering that, is the sobering thought that I have what is effectively a special needs cat, quite young, and depending on ME, for the rest of his life, while I get old and fall apart.
Mikesch continues to tame down even more after every "traumatic" incident, the latest being his last vet visit. Since coming home successfully from that, he jumps up on the desk next to me and asks for food, comes to me for scritches, and stays put when I lay down in bed 6 inches from him. Still feral, but I gain "points" every time I put him in a situation where I can easily "get rid" of him, and that doesn't happen, and, in fact, he gets lots of treats when it's all over.