There are a gagle of users who love it. Wurth Cockpit Spray - ditto above. Wurth people don't like Sonax and vice versa. All type of high gloss shine to the vinyl. I personally don't like this type of finish.
Some people do, so feel comfortable using it as it is a very good product.
I hope that the above has shed some light on the subject rubber and vinyl care. If there are any questions, please do not hesitate to call or write. If you can't find the products locally, please give me a shout.