I'm building a couple pipes. I've done my first one using a mechanical switch at the top but I'm curious about the auto 510 connector. The switch seems to be the hardest thing about building one of these pipes and I really don't want to order just one mechanical switch from epipemods although they do look good. It seems I would get some freedom of design if these connectors work well. Am I going to be loosing a bunch of current here and are they fairly reliable?