Pros : All the van gogh glass make beautiful mosaics! I didn't know until I saw it in person how stunning this glass is.
Cons : The back CAN flake; however I've found that if you make good cuts and use your breakers directly on the score, they break much cleaner. Take your time to do it right, and the result is fine!!
Other Thoughts : I mix van gogh with a clear matching colored glass in mosaic projects for beautiful variations. (I found a good way to foil the back of clear glass that is cheap and easy, using plumbers metal tape.)