It's very light weight. It's low profile enough to be able to be rotated in a hanger, as opposed to the bulk you find on regular autolockers. It's my go to locking carabiner now.
Most lockers can be unlocked by turning the knurl. This can be done, as long as you can touch the knurl. For example, if the gate is facing away from you, grabbing the sides of the knurl to turn the autolocking mechanism is how you unlock it. With the slider, you need to get a finger on the slide locking mechanism. If access to the slide mechanism is blocked, you can't unlock, obviously.
Just like all climbing gear, understanding the gear's limitation is critical. For me, the low weight and profile offset the unlikely possibility of not being able to unlock.
This review was written in the old system and had content requirements that are different than reviews written today.