I got mine from this CRLaurence but through my local glass shop. Here is the link to the chevy/gmc products.
http://www.crlaurence.com/crlapps/showL ... 1889&pom=0
I did it myself to save money, but the glass shop would be a good place to start if you wanted to pay for an installation.
show us some pics when finished!
as for pros and cons, in another thread, Jage wisely suggested awning type opening windows due to rain. Mine are t-sliders which may give more open surface area than an awning, but couldn't leave them open in the rain.
You'll see there are conventional with the black frames, then modern windows with an all-glass look- frame hidden behind the glass which are more expensive, but would match your existing side windows.