I received mine the other day and, at first glance, I was like "eeep? That's very small".
I totally concur that it is a struggle to get the danglies in. Un(?)fortunately i was blessed(cursed?) with a large scrotum too so makes for plenty more pulling. Much as i was excited mentally at this device I have to say that, like slave-krs had heard, once everything was in place things started going rather dark from lack of circulation. Very disappointed as I was looking forward to wearing this one, after not being able to wear the cb2k.