Biggest factor in solar is return on investment and risk analysis.
I checked into adding solar to my barn roof which has full exposure to sun with no trees around and the cost was going to be around $10,000.
Then looked at how many years it would take to which I am actually getting free electricity.
Then looked into the life expectancy of the solar panels in my region in which most are 10 years. So to break even I need to create $1000 a year of electricity for myself. More on warranties here:
http://news.energysage.com/shopping-solar-panels-pay-attention-to-solar-panels-warranty/Additionally i checked with my home owners insurance and they do not cover replacement of solar panels if struck by lightning etc, so the risk is all on you whether it will last to which you will actually save some money.
To me, if there was better protection and a free replacement for panels of up to 20 years in age, excluding labor costs with swapping out bad panels, then it might tempt me more. Additionally the solar panels they shown in the article you linked would be a nightmare for clearing snow off a roof and not destroying them with a roof rake where I live in the North Eastern USA. However if they made them seamless to disallow anchoring of snow and added a heating element feature to get the snow to slide off the roof and expose them again to the sun that might be better. We have long winters and usually a lengthy snow cover once it arrives, so to get sunlight there would need to be a safe way to remove snow from panels.