When I bought my 210 few weeks ago, I've also ordered custom buckle.
Yesterday I met with my friend and also the maker and he gave me new custom 26mm buckle, and I love it :D . Great shape, very comfortable - from the bottom you can see that is not so thick at place where is the strap.
Looks great with 26mm thick strap:
best regards
Jakub Filip Szymaniak