Not until they stop stuff from disappearing when you crash. We don't need another item to waste merits on and then crash with.
instead of making things only be obtainable in SW, just have all SW items come with a 1 hour time limit. that way they persist through crashes, and you can even take them outside siege if you want(can't use thme outside siege, but they can be in ur bp taking up space, etc), yet they can't be used for anything else(especially another siege). just need to make them not buggable like some other time-based items were.
i do agree with mr. blak about the SW pots/gears. i know it's an idea both of us have been supporters of since it's conception, but i would just like to reinforce my opinion.