What are the real life usages of this?
But if you could also get them in four colors, it'd still be a kind of ultimate mathematical floor.
What makes this stand out is, that you can create larger structures of simple tiles, where repeating patterns and seams between tiles are less visible.
Also, this probably could have uses in watermarking and encryption (if you want to do so, I'm not patenting this, just give credits :D )
Not sure this particular tiling can help, but this popped immediately in my mind.