The math that went into creating these dice is impressive and I think these could resolve arguments over the initiative phase of D&D. When it comes to people who just casually play board games, I feel courtesy trumps precision. Maybe the developer will get some business from the organizations running diehard, for-money Monopoly tournaments.
There’s a link from The Guardian article to the inventor’s site too. He makes all kinds of cool dice. I already have one with the twelve months.