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I think it's a dumb idea. Not only will they be damaged by anything and everything that will damage a plastic laminate counter top, but the finish on it probably won't be as durable as plastic laminate. It'll just cost you as much to install a hardwood counter top as it would to replace your plastic laminate counter top a few times.
I can see using these in bars where there's nothing sharp or very hot ever put on them, and any liquid spills are wiped up at least every a day, probably several times a day. But, that's about the only place I see these being practical. (if you presume no one's going to leave a burning cigarette hanging over the edge like they do on pool tables)
Or, maybe they're intended for kitchens that aren't really used, like in show homes. I think they're for people with more money than brains since even the wealthiest of people want value for their money and are going to see that something like this isn't really very practical.