Here's the other one they showed:
To me it doesn't really look like a monster lure that gets them to follow you -- looks defensive or something. Wouldn't be surprised if there's more than 2 options.
In the footage, it seems like the same character had the stealth one and then it cut to him mounted on the monster with the black one. It changed mid jump, so my gut says it was just cut from two playthroughs -- curious if you can go into a hunt with more than one suit item available. I kind of hope you just bring one with you at a time (diff ppl in party can bring diff ones).