At the present time, Kalmbach does not have plans to add a chat feature to any of its websites, including FineScale.com. "Never" is a dangerous word where the Internet is concerned, so I won't say we'll never have it--just not right now. The chat forum that a small number of members have access to was part of a test project. The software seller allows parties interested in their product access to a test area (with more limited features than the product you pay for, I think) to take it for a spin and decide if they want to buy it.
I recommend not drawing too much attention to the test chatroom. If too many people start asking about it or it starts being accessed by more people than the original group authorized to use it, we'll probably be told to shut it down.