Never got to do any tig stuff ---- only got to try one for 5 mins. back in high school, (May 1964) and never had one in my hands since ---- they let me try luni with it and I think they might be great for that.
Practice is probably needed too! --- once you get the feel of them you can roll with the flow!
Not sure I could justify the cost of them ----- do have a lot of luni stuff I could fix if I had one! lol!

"A machine you build yourself is a vote for a different way of life. There are things you have to earn with your hands."