I came across some interesting info:
--------------------------------------------------------- Rock salt will damage the coating and is not recommended. Metal shovels will damage the coating. We recommend the use of plastic shovels only.
Q: Can I use Revitalize on all four sides of my deck boards?
YES. REVITALIZE? is a breathable coating and can be used to coat all sides of decking boards.
[That implies it may not last well against moisture, just as normal acrylic paint doesn't.]
Q: How does Revitalize compare to porch and floor paint?
REVITALIZE? is intended to improve the appearance of aged wood and concrete surfaces like patios and retaining walls, structurally sound old, gray weathered decks, stairs, docks, posts, railings, and more -- as an alternative to replacement. It will fill small cracks up to ?-inch in depth. REVITALIZE? can also be applied to new wood or to
30-day-cured new concrete when a non-slip, textured surface is desired. REVITALIZE? lays down a finely-textured surface.
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It sounds like these products are a good option to improve the look of an old, weathered deck, which is what it sounds like you have. But maybe not the best choice as a basic deck finish.
The marketing material at the SW store for their product was not so honest. They describe their product almost identically, but present it as something like an industrial coating rather than a high tech bandage for old wood.