For anyone who might not be familiar with the chain jacket glitch, it's performed by using an attack, short hopping, and using the chain at the peak of your short hop. For some weird reason, this causes the chain to store the hitbox of the last move you used.
Yeah, it's still in. I've only done it in training mode, though. I'm not familiar with Brawl Sheik, so I don't know exactly what situations it would be good for. When I tried it out, I down smashed a computer off of the stage and then used the CJG with down smash's hitbox to cover the ledge.
What other situations would CJG be useful in? Also, is down smash the best hitbox to use for this glitch? If you're using it for edgeguarding, it seems like down smash is the best choice since it sends them more horizontally.