I'm playing through the extra content (Piu-Piu's maze), and I've stolen several powerful pieces of equipment from bosses - such as the Agent's golden armor and the Executioner's Spine.
What I'm wondering is if there are other ways to get items like this, or if they have to be stolen from bosses. Since you only get one shot at the bosses, that would mean missing the steal prevents you from ever getting that item (and also from getting full completion) on that playthrough.
