I have a pair of Doursoux's in France M-43 roughouts, they are made by Corcoran same as the WWII Impressions ones, and built to last, love 'em. Size down though they come up big, I bought a U.S size 7 (uk 6) and they fit my UK7-7.5 feet perfect with a nice thick sock.
Otherwise there are these which I love and will own next year the WWII Impressions Boondockers. The same as the service shoe, but slimmer down the foot and a bit more if a dressy style. I wouldn't 'dubb' these like I did the service shoe but leave the nice suede alone.