I also remember seeing a Winchester advert that pictured a '92 Short Rifle with a 1/2 & 1/2 barrel. I don't know of anyone who actually had one or even if they were even produced for sale. Perhaps just that one to cause the '92 fan community to salivate. Continuing to think about it, it may well have been a Miruko built '73. My memory is actually shot, so don't quote me.
When I was still a practicing Gunplumber, I built two Chiappa rifles into 18 inch 1/2 & 1/2 rifles. I'd like to have a Chiappa take down and cut it to an 18inch short rifle. Twould be fun.