Leica TS15 and Carlson-Is it possible??

I had an opportunity to purchase a used TS15 a couple years ago (from a non-Leica dealer), but coming from a Nomad using Carlson SurvCE and TDS, I find the Viva software and controller cumbersome; I really like the gun though. I'm completely new to Leica, and I thought that using this instrument with Carlson would be possible. From what I understand, an additional license may be needed, and even then, SurvCE can only be used on the CS15 with the TS15? Does anyone have any experience with the combination, and if it is even still possible to purchase the extended license?