This appears to be what we call Onduline here in the UK. We had a new stable roofed using green Onduline sheeting five years ago and have been impressed at how it has stood up to the high winds we get out here. Only had one tiny leak which was easy to seal. Coloured sheets do tend to fade after a few years but not too bad. We will be using it on new stabling we have planned and certainly recommend it.
Advantages over metal are, it doesnt rust and isnt so noisy when it rains. One thing to point out... it can sag if not supported properly, so make sure you have enough roof struts and they are not too far apart.
