Not my cup of tea
It worked alright but I didn't feel like it would do the job. My rope is a 10.2 that did feed very well and would slip through the device(we let go to test it's autolocking feature) with heavier climbers(190+). Other ropes that would lock up were hard to pull through the device. It did lock the rope better than an atc though. I prefer either standard atc or grigri.