I've got a nice Zone VI modified Pentax Spotmeter V. It's in nice condition, and also has the Zone sticker as well.
It works good, it seems to be about 2/3 to 1 stop overexposing compared to my D700 meter. I usually compensate but setting the ISO a little higher than I normally would. It works good but I just wanted something a little smaller.
Here are some pics. I did more testing against my Sekonic L-778 and the Pentax is almost exactly 1 stop overexposing, so it is really easy to compensate for.