Other than assumed durability, that design offers nothing on the BC. He should have recessed that release button further away from the eye. That is the one thing that bothers me about BC. Also, do you really need to make the button red?
Unless the two sets I have are completely different than ALL the others he has manufactured you can remove the "assumed" from in front of durability. He kept breaking BCs. That was his main reason for making them. As far as the other two features you mentioned you'd have to ask him why he designed the release button as he did. Those are features of BCs that never bothered me.
