Title of the link says it, Piano Arpeggios. I think most Arranger players are happy holding a chord in the LH and doing simple melodies or fills with the RH. You don't use many Arrpeggios on organ either. They lend themselves best to a sustained sound which an organ can't do.
As for runs, its practicing scales and arpeggios of all kinds in all keys and then using that as a foundation for your own runs. I still do dimishied arrpeggios for a good finger strech and warmup on piano. I like Tony monaco better that Joed D for the simple reason he doesn't just take off with super fast runs which I think can take away from the song. Some are OK but Joey goes ballistic. I was just listening to him the other day and thought the same thing. Because you can doen't mean you should and sometimes a lot is too much.