Yes that's French Moleskin - same fabric Hervier and Le Labourer use. It's a densely woven cotton. English Moleskin is sheared to give the fluffy texture, but French (and German) moleskin is left unsheared.
No luck with any of the stores I know of. It's worth checking back at Kapital.jp as they do sometimes re-stock. Rakuten/yahoo is obviously worth checking too. Be warned - I've got the same shirt design in blue denim and they come up quite slim.