As I'm tired from being able to make some arppegios on chords just with fingerstyle, I started praticing it with the pick (take musics GnR's Don't Cry or Civil War for example). I ever did it with economy picking because it was easier. Make fingerstyle patterns with economy picking seems a lot easier than alternate. But then I found a video on YouTube saying that it's better to train alternate picking with arppegios. Reference:
Is that right? I mean, learning only with economy picking will stuck me in other situation?