If you''re headed to Bermuda, running into mud should not be a problem...
The wing keel does let you get into shallower water than a deeper fin would, without the problems of a centerboard. If you have a good reefing system, the reduced stability (due to the shorter lever arm of the keel) may not be too much of a drawback. Wing keels do tend to help boats track well and "feel" stable, so steering could be less tiring on long passages. A couple of long coastwise trips might give you a good idea of what to expect.