....Hmmm. Actually, I that may be right. The example usually pointed at is Yorr, but with Yorr you never receive the stress token at all.
So it works because Porkins gets it, even if it is discarded as soon at it is assigned? It don't have to linger?
Hmmmm... In any event Porkins is taking a 3/8 chance at a second damage for a 3/8 chance at getting an Evade.
Or, at least, he's taking a 3/8 chance of a damage (from his ability) in exchange for a fun matrix of possibilities. I'm assuming you're going to be using Elusiveness on a crit, because frankly I wouldn't care for the odds you get for using it on a hit. If you're flying the Elusive Porkins, you're effectively trading .375 HP for:
1/4 focus force (could be useful if your opponent is a high-agility ship and you've yet to fire back)
1/4 miss
3/8 downgrade the crit to a hit
1/8 no change.
If I felt luckier, I might pair him with R5-D8 and a Hull Upgrade, but then we're at 34 points for a gimmick ship that depends on the dice being happy. Whether or not that's a good deal is left as an exercise for the student.