Question for anyone who has used GoGo Wifi between the US and Alaska (particularly if you've flown from the Pacific Northwest or West Coast up to Alaska). I tried a quick search via Google and the forum but "Gogo Alaska wifi", even adding "Delta" kept giving me results relating to Alaska Airlines' GoGo.

I did check the GoGo coverage map and it does show coverage along the corridors between SEA and Alaska. I have a flight soon (SEA-ANC) and am considering getting GoGo to do school work on the flight. Has anyone used GoGo on this route or a similar routing up to Alaska and if so, has it worked well (well about as well as GoGo usually works) or have they had issues?

ETA: I will be on a 737-900.