No, I haven't seen anyone make a skin like this. I don't think it would be too hard to do, though. There is a [url=http://b2evolution.net/man/2005/06/18/make_a_skin_based_on_my_proper_layout]guide to turning any web template into an evoskin[/url]. Read through that, then view source on theregister.com and copy all of that code to use as a reference. The trickiest part is going to be the table layout. There's a part of _main.php where a loop runs through all of the posts. It won't be hard to put a <td> before each post and a </td> after each post. But you also need a </tr><tr> between the third and fourth posts, sixth and seventh posts, ninth and tenth posts, etc. You could add a bit of php code to the loop that keeps track of whether or not to add the table row code. It would basically count to three, display '</tr><tr>' then reset the counter. (The very first <tr> and the very last </tr> can be outside of the loop along with the <table> and </table> tags.)

So I guess it won't be all that easy, but it's very doable.