Aha, I get closer:
http://www.toplessrobot.com/2009/09/the_11_least_necessary_star_wars_comic_book_storie.php?page=2
How's this for an exciting tease: in 1996, the people at Dark Horse found an early-'80s, never-before-published in America story from Marvel UK! It has Darth Vader in it! Alan Moore wrote it! It's going to be fantastic, right?
In it, you see some unhelmeted Stormtroopers brought down by "Clat the Shamer," a hired killer that causes people to kill themselves by feeling great shame. While this is going on, Darth Vader is playing chess with a squid in a big glass orb named Lady Dhol.
and, having found a bunch of the Marvel comics, I see what you mean about Marvel having disregard for clone status. I guess the clone army is augmented by regular guys, but is that canon?
I also found a classic - the last three Mandalorian warriors and an (obviously now) irrelevant back story.
I'll post the scans soon.