I did order the Anker USB 3.0 Ethernet adapter to use with my New Macbook Pro 13″ Early 2015.
The tests are simple, just to check if we are getting any performance hit when using this adapter, and the answer is simple as you may have watched in the video. And besides the ethernet connection we eill also have 3 extra Usb ports 3.0.
You will get the same real speed trought the USB 3.0 to Ethernet, than with a native Gigabit Connection.
Hope It helps as usual
All the Best