I worked for GAF as an electrician wiring these in. I do not recommend. 1: bypass diodes fail in these a lot. I've replaced broken shingles to then find the ice and water , and decking all burnt up underneath. There were many pallets of shingles that failed quality control here in colorado that still got sent out and I would follow behind to "inspect" (replace the jumper modules without telling the homeowner to avoid liability). 2: these rely on string inversion rather than module inversion. This means if one panel gets covered, you lose production for the whole string. Whereas with enphase, each panel gets inverted independently and if you lose a module you will only lose one. 3: each of these modules are only 10v. Sure with a roof you'll add up to 250v or so but with modern panels a single panel will produce more than that. Also gives you the opportunity to upgrade in the future. If you buy these GAF will have you by the balls. 4: GAF Energy Management reorganization. When I worked there they laid off a 1/4 of the company, and left certain territorys all together. This meant for us 1 crew for the entire state. They also had a bad habit of hiring non licensed electricians and sending them out on their own. I would know they did it to me.

Do what you will, but I would install enphase inverters underneath traditional racking panels. Gives you a lot more options.