No I have the stepper motors and it does everything I need it to do, but I have thought about buying the servo's. It's not bad to update.
They have people in the US, where are you located? When I bought mine I was even able to talk with the owner of the company, pretty much unheard of these days.
I would be glad to introduce you to him or help you in any way. Don't get me wrong the Tormach is a great machine, but not the only one on the market that can do what you are wanting to do for around the same money.
Really what sold me was the support, the power of the machine and the size of the table.
Let me know if I can help in any way.