As a southpaw, I wanted an 85-series pistol. I chose the 85 Combat, and as far as conditions of carry are concerned, the 85B and the 85 Combat are the same. I would say that the 85B has added safety though.
However I chose the 85 Combat for its cleaner trigger, the trigger overtravel adjustment, and it is easier to field strip the gun with easier access to the firing pin. The 85 Combat has adjustable sights, which I consider (in general) to be overrated. I have had no issue with the sights though, and I do carry my Combat often. Also, the 85 Combat has drop free magazines. I consider this a mute point, as this is an easy remedy for CZ's pistols that are without.