RE: Hate it when the expiration date matches the maiden..
In reality, you shouldn't even need the tape to hold the wings together. There is practically no load whatsoever pulling the wings apart during flight. All of the forces are perpendicular to the wing tube so all of the loads are on the tube and the rubber bands. If the tube fits tight, and enough rubberbands are used, there is really not even any reason for the tape. It's mainly there just to keep them from being accidentally seperated during wing installation and transportation.
The epoxy and glass will aid in high-g situations where the wing tube would have failed, but does not really help at all with keeping the wings from seperating.
How many gliders have you seen that use nothing but 2 aluminum tubes to hold the wingtips on?
-Eric