With regards to his encores, I verry much love his arrangements. Mozart wrote variations and arrangements of popular tunes during his day, Volodos is just continuing the tradition. So why is it that we look down upon arrangements of our contemporaries yet praise those by the great musicians of our past?
Is music just about the serious stuff, and academia? No, but unfortunatly many musicians restrict it to that. Anyways, if you want deep check out his Scriabin 10th sonata. Quite a unique interpretation.
"Showoff" music in the hands of Volodos ceases to become a fury of notes and instead turns into something magical and spectacular.