Years ago on a Canada DIY a young man used a concrete product that he molded with his hands to cover his bathroom countertop and directly down into the lavatory. It looked like all one
thing. He even covered stairs with this product. It was lovely and covered an ugly lavatory. I believe he even used this in his bathtub. Any idea what this was and is it available? It was beautiful. I believe the mixture had some type of fibers in it.
Go for it! Like you said, what's the worst that can happen! I'd recommend a product called Surecrete Xtreme. It's not what I use, but it's geared more toward the consumer, and is a very high quality product. there are just two components to mix together, so it's very easy to get the mixture correct.