I don't think there's much chance of us converting to American! There are far too many collectors/dealers etc that are perfectly happy with Brit, most of them prefer it, so there's not much chance of that. At the end of the day people seem to forget that the Royal Mint is basically a business. Ok, they make coins for the nation, and several others, but a major part of their business is to make a profit. They sell all kinds of crap directly to collectors, many of those collectors will be American, and this is obviously an attempt to get more money off our (ex) colonial friends by combining the name 'Royal Mint' (which many Americans probably imagine is a big old building with a draw bridge, guards with long fluffy black hats that live in little 2"x2" sheds and all the employees wear bowler hats!) and of one of their much cherished 3rd part grading companies. It's very clever, and I doubt very many of those slabbed modern proof gold bit and bobs will be returning.