This looks like a possible minor bug. In my game, Orbs and Equipment appear with redundant slots on their respective menus. As shown on the attached images, one slot shows as normal, while the other has a "(Recent)" tag appended before the description. I don't think it's supposed to be like this, but I could be wrong. For clarity, I'm playing the Steam version with the Kickstarter Backer Early Access copy.
(Recent) means it was recently equipped. So it will be easy to find when you get enough gear to require scrolling.
Ah, I gotcha. Hadn't seen something quite like that before in an equip menu, so I thought I'd just inquire about it. Rock on.