For you GitHub enthusiasts, you can follow the development of it and perhaps contribute back to the project. There are a couple seemingly simple things to fix, if you’re familiar with X11 and C++.
slimlock is probably the quickest locker I’ve used yet. I just press the padlock hotkey on my keyboard, blink and it’s locked. Same goes for unlocking. It’s everything I expect from it given the performance of SLiM.
Thanks Mr. Joel Burget!