Works flawlessly! Both keyboard and controller work as normal.
Although, correction. I am not sure if this is only on linux,
but once a player is killed, the slow mode never ends.
It just continues and you have to restart the match to continue.
(This is only a problem for the player vs player mode)
Thanks for confirming, that is present on all versions, currently pressing R is the only way to reset until I add a proper way :)