I have a matte black and nickle. I''ve been carrying the black one for a little over a year and seven months in an Uncle Mike's nylon waistband holster-no finish wear at all. I would suggest the black is better for concealment. Somehting shiny inside your coat could attract attention, while that black "something" could just be a cell phone.
My nickle plated model is also very durable, although it is my bedroom shelf and range practice Bersa, so it has a pretty pampered life. Over the long term I think, by looking at them, the nickle model would be more durable to CCW, depending on how rough you are with it and what kind of lining your holster has.
By the way, for practice shoot Blazer, very accurate and inexpensive. For carry mine is stunning with Remington 88gr and Magtech FMJ's.
As a side note, we lived in Virginia Beach for a year and three in Newport News. My second daughter was born there, 27 years ago, and I still call her "Belle" as in Southern Belle, daughter of the South. I always wonder if we had stayed how she would talk today, it'd sure be fun to hear her with that Virginia accent, and her mom and dad are yankees (Michigan).