Unknown - from what I've read on the WBT site, the shroud exists solely for EU electrical safety code compliance. That said, if you are in the US and have no interest in selling them elsewhere, I don't see why anyone would really care. Then again, some folks can be overly sensitive about stuff like that...you could always buy another two pair of the posts, and keep them around for potential future resale. This way, you have a speaker that can actually be wired with any cable, and also have a plan for future contingencies.
-Richard
-Richard