I've used this on several Trad climbs, over a week of alpinism, on via ferrrata & a few times when scrambling, its quick and easy to deploy and I like that it is infinitely adjustable. Belay link is also very handy.
The only negative I can think of is that it can be a bit difficult to stow away without a long tail hanging down or having it wrapped all the way around your waist, if carrying a large rack it can be difficult to manage.
- Fast to deploy
- Tricky to stow