I purchased the Half Moon board. I have 2 rectangular beading boards and find them very useful. The Half Moon shape seemed like it would be useful for travel in the car, and smaller work surfaces. However, I found that it is unstable and tilts forward easily when my my forearms are on the front edge. It doesn't take much effort to tilt the board and have all the beads roll down.
The board is well made, the fabrics are soft, and seem sturdy. But the design (base is smaller than the outer rim) is not practical. This was a disappointing and expensive purchase.
Cheers
Half Moon 8x16" (20x40cm)