How does Switcheroo affect equipment and Unsummon?
The bladed bracers remain attached to the creature and will continue to confer the bonus as long as they remain attached, but you are still their controller.  Next time you have an opportunity you could use the equip ability to move them to another creature you control.  (Note there is no "unequip."  You need to have another creature under your control to move them on to in order to activate the ability.  In this case it's likely you do since you got one from Switcheroo!)