The sad part is, the RH slide release (to accommodate southpaws) isn't necessary. I'm a life-long southpaw and I find hitting the standard slide release on ANY semi-auto easier to do with my trigger or middle finger than most right handed folks can do with their thumbs.
The RH slide release lever also interferes with the 'thumbs high' grip for southpaws.
The CZ 85 slide release design is really an answer in search of a question. That's why my 85 is slated to get replaced by a 75 in stainless.
- Brian