I've been through the rounds with that one too my friend. We never had to wear vest before the remotes came is what I told them. I never did put my vest on the outside of my coat, well unless it was extemely cold outside. Think the last time they got on me about it I said give me an act, and they drove off. I forgot all about that stuff, another reason I don't like that stupid vest. LOL
Steelwheels, a few days back in your post you described a lot of problems with the controllers.
Are the boxes really that sh*tty - it sounds almost like a beta mock-up (where you expect to find problems, and fix them for the final production version) instead of a robust, production version (and it needs to be robust to work in such a harsh environment).
Sounds almost as crappily designed and poorly made as a cheap Chinese DVD player (please note, Chinese workers could make a quality product, but are apparently instructed by their American Corporate overloads not to...)