I've used this method for a bit - I found that a back up was best as security. I've never been grounded but have had some slippage. Also, continous usage does show wear on the rope from pinching it over and over. No true damage but I have switched to whoopies for some and found greater ease of use and weight savings.
The key to immortality is first living a life worth remembering. - St. Augustine
Some people feel the rain. Others just get wet.
- Bob Marley