I'll be using one from this season on, but the bike is not finished for another 3 weeks or so. It's a 18x1.85 with Heidenau K34 3.50x18 tire. The total height is quite a bit smaller than my on 3.50 Dunlop K70 on the 19" wheel (had them relaced a while back, also on a 1.85 rim, so the fender looked a bit out of place.
I drilled the mounting holes in the fork brace about an inch higher up, and welded some more metal on the brace to have the holes not sitting too close to the edge. I like to think that with a shorter height, it might stiffen the fork brace somewhat.