GCL worked pretty well last night.
Tested on both my Roku and Xbox. Quality on both was acceptable. Not quite the feed you get from CI, but close enough where you don't notice the difference. Comparing both in HD, of course.
A small amount of stuttering, which happened 3 or 4 times. It would last a secord or two each time. Clearly it was dropping frames. Barely noticable.
In the end, the CI feeds are clearly higher bitrate, and of course the same resolution (wouldn't it be nice if we could get 1080p sports feeds on TV or streaming? Oh well, to the future...) which leads to a better overall picture IQ, but with the convienences of GCL it wins outright for me.