I have one of these too. It's my first plane, so I just put it together how the instructions said. I used the tape, and was surprised how strong the joint was.

After two or three flights, I was giving the plane a quick check, and found problems starting. The tape at the leading edge was starting to split right at the joint. If you held each wing half, you could easily move them around a little. I epoxied and glassed the joint before I tried flying it again.