What features do you require for your simulations?
We are planning for a "documentation day" in the near future to complete the documentation on the interface.
The python interface has come a long way over the last few months and we are now using it productively for our own simulations. We are focusing our development effort nearly exclusively on the python branch and prefer completing missing parts of the interface over spending time on the tcl branch, since we will definitely retire the tcl interface soon.