Yeah, having chapter 1 Dario and this Dario are 2 completely different people.
Who knows what made the author decide to make him at least two dimensional instead of one, tho he didn't help Darios case with the "Im taking all the gear'n'stuff and not paying for it" just before putting him in this arc. Made him look like the complete and utter shithole that he was in chapter 1 while then deciding to not go that route less then a chapter later.
Author-san needs to make up his mind to either make him the shithole or nice guy, not try to mix in both since all we will see then is chapter 1 Dario whom everyone hates.