There used to be a US-based alternative to the Midori called the Pelle Leather Journal. Didn't have all the accessories of the Midori, but it came in a medium size (perfect for using Clairefontaine 4.25"x6.75" staplebound and clothbound notebooks as refills) in addition to the small and large, and the elastic strap was along the spine instead of awkwardly sticking out of the back.

Pelle seems to have vanished, as far as I can tell, but fortunately Midori stuff is a lot easier to get now that Goulet Pens carries it.

Edit: What's been up with Kinja lately removing the whitespace before the first hyperlink?