"and a series of 'squeeze' buttons which give a 'right click'"
I can't imagine how that would be comfortable. Looks like a nonstop flight to RSI hell.
"Or, it can be configured as the 'middle mouse button' for complete compatibility with your applications."
So the middle mouse button could be at any position with respect to your fingers depending on where you last stopped scrolling, even tucked right under your palm. And there's no way to get it out into a more natural position without scrolling something ...
Plus, having to take your hand off the mouse in order to scroll seems like a big hassle.
Continuous scrolling is nice, but having to design around all these problems seems to diminish any benefit that gives you.