My understanding is that Keith Brown has stopped accepting new orders to catch up on his backlog. Beyond that, I don't know what the future holds for him.

I can recommend Spegel grips from personal experience. I have a set of his J-frame boot grips and they are great. Last I heard he was quoting about a one-year turnaround time.

I don't have any personal experience with them, but I've liked what I've seen from BluMagnum Grips. I don't know what their turnaround time is.