ah ok, that's contrary to their claims then. They claim the main benefit is that as the clots are removed quicker it causes less damage to the veins, and thus reduces the chance of PTS although i can imagine threading a guide wire and other bits and bobs would also cause damage.
TBH, my greatest fear is PTS, I can live with taking warfarin for 6 months, i can even put up with wearing the stocking for 2 years, but I just hope that's the end of it.