I think you can swap lenses on the Mag Switch--It's just a lot harder than others. How does the Mag 4 compare sizewise to the Mag Switch. Is the fit a lot tighter on the melon?
no dice on the switch..trust me, I had a broken pair in hand and destroyed the lens and still couldn't even get it to budge maybe 2mm...Tighter than, well, you get the point..I need another pair to test an idea I have on how to get them out, but putting another set in without trashing them is also a question that will remain unanswered until I can mess with some..