Kyra's brother Nile was able to use his actual hands.
There was a flap that she sewed in which he could not hold onto those handles inside the Hulk hands and make them come out of the flaps that were at the wrists. Kyra showed me in person how it worked, and I got to try them out myself a couple days before A-Kon.
From a distance, if you hold other things, it creates that illusion that you're like an action figure a la Star Wars/G.I. Joe figures, pseudo-pegs and all.
@ CU: Not to be rude (and it's a bit off-topic), but super spell check on your part in your last two posts. Don't take it personally, but it's just really easy vocabulary that's misspelled.