just a thought for the group, if you were stuck in the boonies and your bike was dunked in 2' of water and the hubs flooded as the bike is dragged through a muddy ditch which set of bearings will cause you less problems, a regular Deore/XT or any of the sealed hubs out there? How sealed are sealed (is there a range of quality?) and if they do get water in them how well can they run compared to conventional bearings with lots of grease?