That product is similar to all the other 100% High Solid Silicone Roof Coatings sold under a variety of names. I said similar because that product is a cross between silicone roof patch and coating. Roofing silicone patch is dense due to the incorporation of poly fibers to strengthen the coating. Regular silicone coating is flowing with no fiber additives. That product seems to have included fibers while maintaining the flowability. I'll say that if it can be applied like a regular 100% High Solid Silicone Roof Coating with the added benefit of having some poly fibers, it may be an improvement over regular silicone roof coatings used on RV's.
Now, as for RV high solid silicone coatings, there are many who love it and many who hate it. You can research High Solid Silicone Roof Coatings and get a sense of it's advantages and disadvantages.