About warbows on planes, using SAS I paid a nice price for a tube of bows and another with arrows taped to it flying Oslo-Heathrow-Oslo. Even though it's in and out of the EU. Sports equipment is a category not charged too high, and as they were unable to find "warbows" as a description of goods they put it in the same as skiing equipment. I don't remember what I paid for it, but I would have remembered if it was an unfair price to it.
About EWBS, we've just started competing in the same classes as the ones used by EWBS up here, and we'll make a list of the national records for each category.