I have just found this system. I have yet to try it. It will be slower but seems to be a much easier system that using a gri gri and ascender system.
I have used the ascender system and it does take some work and set up has to be correct. The mammut system looks to be much easier and is a cheap solution.
Yes, that was actually my original question in the thread . . . do you have a photo of how you have that pulley rigged? I have been trying to figure out the best way to do it. Is it hanging from the bottom of the ascender or from the top? I tried from the bottom and lost too much travel distance - did not seem worth it.
I have seen it done like this. There is a little more to transitioning but nothing compared to a FROG or TEXAS (Top Climber), set-up.