Anyone have experience with this wide angle lens?
 

I have to film the inside of a few houses in a couple of weeks time. The one that I am looking at is the Century Precision Optics DS-55WA-37 0.55x Wide Angle Adapter for the HC7/HC9. Is anyone using this lens and what has your experience been like. Also, will this lens be right for what I want to do?

Any other recommendations will be welcome.