I used it...
I've used this cold galvanizing compound on my truck.
When I had it all apart, I was thinking of having the trim bits dipped, but there wasn't any place nearby that would do the galvanizing, so I tried out the spray.
I used a number of brands, Rustoleum, CRC(?)...maybe one other...
All in all, they seemed about the same, just a lot of thin coats and it's held up pretty well.
I've seen another guy's truck who did the hammered finish paint on his trim...now that *looks* more like galvanizing, but it would be a toss up to see what is more durable...
Bogatyr