Dmitri gave a demo at Watson this summer; it was quite impressive. If people happen to be at SPLASH in a few weeks; check out their tutorial or otherwise try to see a demo of the tool
All of the integration questions Erik raised are important.
My own assessment is that getting it integrated and ported to Linux would be a huge productivity boost for people working with Jikes RVM. So it is worth some time trying to figure out how to make it happen.