I believe there was criticism of the S-92 during the development that it would be quite difficult to evacuate in the event of a ditching. This was in comparison to the EC225 and was due to the size of its cabin (the big selling point of course) and the height of the windows.
Of course, any aircraft that rolls in water is going to be potentially very difficult to get out of. I firmly believe that was the saving grace of the 225 accident last month.