This is a good value in steel, made in same factory as surly, takes up to ~45mm tire:
http://aebike.com/page.cfm?PageID=30...ils&sku=FK1268
I've got one in atb version, ok so far, made by aprebic (tw). Good price right now:
http://www.nashbar.com/profile.cfm?c...20Road%20Forks
Afaik, no one makes EXACTLY what you're looking for (mid fork pannier bosses are rare). You could make your own with the dimension fork, 2 bottle bosses, a drill, a propane torch and some bronze/brass - then paint to match the 610. Add a housing guide while you're at it. A lot of work, think i'd just clamp on.
If you haven't messed with disc you are in for some surprises on fitting rack, fender, lever, housing guide etc. So if you're not committed to disc you're better off with the foprk below. Tange makes a fine, excellent value steel fork:
http://aebike.com/page.cfm?PageID=30...ils&sku=FK2474