I own the previous version and LOVE it. Of course it has its purpose use and is not suitable for all applications, although it can be used just as a normal soldering iron as well if you can live with the bended tip options. One big draw back on my older unit, which seems fixed on the newer units is (not sure), is the tip of the solder feeding pipe. On the older units it used to be a plain metal, which sometimes if not carefully used, used to get stuck from molted solder, and actually this is the only reason why the wire would break, or need to change the feeding pipe on my system. The new system seems to have a plastic/Teflon tip that I am guessing should work better.
I think for your application might be a good use, can you post some pictures/model numbers as still abit unclear to me the actual use.