It would probably be better to post your question in this same thread. You should just try them out as they are. I pretty sure you are going to like them with or with out covers. You already got the covers coming, so just try them out. If they sound good, go with it.
If you want to get them un-coverd, it is best to send them back to BKP. Other wise it voids the warranty, and if anything happens to them, your warranty will not be valid for repair or replacement.