I have done that in the past and it is a good way to test all sorts of neat things. Asymetric stall strips and other wild sorts of things like flat LE's. Yes, the sharper the LE the more vicious the break when the wing stalls. The problem is you have to have a high speed wing to recognize what you are looking at, OR be very slow at altitude with a good deal of nose weight. It normally takes about 3 different shapes before you begin to recognize what you are seeing.