Check out the new amphibian from Sukhoi- the Be 103.  This twin engine airplane has a useful load of 385 kg. What caught my eye was the low position of the wing. It is said to be a midwing design, but from the way it sits in the water, the wing tips look quite close to the surface of the water, even as the plane rolls out of the water in the photo.

If a wing tip digs into the water on takeoff or landing, the airplane could cartwheel to a disastrous ending. On landing, a gust or floating object could cause a wingtip to drop.  Seems like a poor design choice.