Works great.
For PCB assembly holder
Big improvement over the Panavice I normally use since it allows me to brace my wrists on the bench top (for better control of the iron and tweezers) and work directly over the PCB instead of off to the side.
FYI I don't recall there being any documentation but, it's a vice; what documentation do you need? I only gave the documentation 5 stars because Tindie requires a rating for that category.