This is by far the most convenient way to open a bunch of switches without finger pain.
While I still consider myself an amateur 'collector,' my wife would disagree that having 6 customised keyboards is 4 too many. While working on these I have also amassed a small collection of different tools, some free with keyboards, others as part of a pack, this is by far the best and easiest to use switch opener I own.
I've tried a few different versions of the cubes and Glorious' Switch opener, having to sometimes pull the bottom half of the switch out out of the opener, when you're 100 switches in, is no fun on my finger tips.
This Gateron produced opener has not disappointed at all... Switch goes in, press the lever, switch is opened and is easy to remove.
My only recommendation to Gateron would be to maybe try and improve the indexing of the switch into the opener to get it aligned quicker, but this is a minor issue, if even you'd even call it that.