big feet yes - small wheel handling no
on tour, on u-turns, i nearly fell a number of times - maybe too big feet, maybe poorly designed bike.
mountain wheels would give me more clearance for clean waterbottles and buying power at walmart.
i am looking at those sun ryno rims that never go out of true - so i don't have to worry about the wheel building aspect of bicycle ownership.
at any rate, conceptually, it should be possible to install smaller radius wheels on an american touring bike for off-road riding in the outer reaches of mongolia for example.(making a koga-miyate out of a cannondale) but i perhaps have to play with the wheels in reality instead of trying to figure out sizing and compatibility using little preview pictures of canti v. u-brake brake systems