This is probably a bit late, but I have used a pair of ropemen for most of the TR soloing I have done (had them from some mountaineering gear given to me). They definitely don't feed as well as a microtrax but with more weight at the bottom of the rope it works fine. If I had lots of money I would get two microtraxions but...free gear is the best gear.
Edit: The teeth are pretty agressive and offer a totally slip free catch...so there's that.