Quick update. The code is in Juan's hands. We have to wait until he reviews the code and prepares a release if he thinks that is ready for inclusion in the core distribution.
From my end, this was the last update for this module. I'm working on a complete rewrite of TGV tools, with a faster algorithm (that also seems to give better results) but that needs a few extra parameters. I'm still far from a workable module, but some tests in scripted codes show a lot of potential.