Its strictly aftermarket... there are some nice ones out there, in differnet color vinyls, carbon fiber "look" etc. - I thought about getting one, but need to see it on a 2010 (in person) before I make that move. Ive only seen pictures up to now. I did do something this weekend which has made a noticeable improvement in chassis stiffness, I installed a strut tower brace.
I do know that the style/light bars clearly state that they offer no extra protection in a rollover, however any time you bolt the sides of the car together, it has to help with rigidity.
And I have had no issues with my top, motors work smoothly and the fit/finish is great. No leaks at all.