I've had to replace mine once already, and it cracks within 1-2 years in California weather. I might replace it again, but wrap it with vinyl before installing.
If I remember correctly, you might need a tool/screw driver (with painter tape wrapped around it) to release the clips. I did break one of them, so it might be a good idea to have a few spare just in case. Let me see if I can find the PN.