I didn't even think about it until tonight, but I've been taking Buzz for off leash walks quite often, with Bailey, with a relatively low rate of reinforcement... for quite a while now. Not every time, mind you... but I don't think anything of just letting them both out the front door, and expecting them to both stick around with me.
Part of it is probably due to training, but I'm sure an even larger part is that he doesn't want to RUN anymore.
Definitely a sad happy. He gets more/better exercise this way but it's still a bit sad.
He's been going to the car leash-less for probably a year now. That is still something I'll have to get used to. He used to be incredibly naughty and RUN at any chance.