The Gamorrean Guards -- Inspired by Orcs?

When I was younger, I was particularly struck by an image in a storybook I owned about Return of the Jedi.  Despite the disappointing movie overall, there was a pic of a Gamorrean Guard.  The Guard himself reminded me of nothing more than a classic 1e orc!

Now, Gygax himself has gone on record as saying that he didn't like the pig-faced orcs, but nonetheless it's an iconic image -- one that I didn't like 2e and 3e changing, thank you very much.

For anyone who doubts what I'm saying, here's a pic of the Gamorrean Guard:





And here's a pic from the first edition AD&D Monster Manual:

Note that for Star Wars, the G. Guard seems to be rather low tech, something you would find in a more medieval/Hyborian Age culture.  What do you think?