Yep! Phil Wood does exactly that on their rear touring hubs. 57.8 mm on non drive side flange, 54.5 on drive side flange. Here are the results for my wheel on a spoke length calculator...
EDIT: Apparently the flange size difference is only on the older Phil Wood hubs. See posts 17 & 18 below.
Last edited by BobG; 10-26-17 at 03:46 AM.