Lightsaber claws in Expanded Universe?

This may be a bit of a weird question, but here goes; have any notable Sith or Jedi used 'lightsaber claws' in the expanded Star Wars universe?

The reason why I asked this is because I remember an interesting comic in which one of the canon Jedi (I don't recall who it was, possibly Obi-Wan), traveled to a temple to assassinate a Sith/Dark Jedi who wielded such a weapon, getting past his guards by mind-tricking them. Despite being very portly in build, the target managed to fight several bouts before ultimately falling, though not before seeing a vision of countless souls.

I know this was an official Star Wars comic due to reading it in an anthology, but all attempts to dig up its identity have proven fruitless (e.g. the only character I have found who used a similar variant is Kinsuj Inkstu, and he's an Exodus character!). Thus, I hope to find out who drew that comic and what characters featured in it with this question, as well as learn about a fascinating lightsaber variant.