I used the execute option and was not charged stamina or given plans until I clicked claim within the window that showed up. Also, if you hover over the plans presented they will tell you if they are a helm, cloak, chestguard, relic, etc. Overall a really useful feature in my opinion. One that I greatly appreciate. I've had a hell of a time getting all my guarding gear because it keeps dropping the wrong plans. I picked up 3 useful ones today just by clicking claim.