You can chamber-kick people who kick you, it's pretty easy tbh unless you are daydreaming or fighting on autopilot.
What? I thought I was not a bad a player and I can chamber attacks pretty consistently but I find chamberkicks extremely difficult to pull off unless you are fighting a very predictable kickspammer. And I don't seem to be the only one as I never see it happen.
The kicks linger on a little too long in my opinion, you shouldn't get kicked when the leg is retracting, causes some very weird situations. As a kickspammer it happened to me loads of times that I wasn't able to do the free hit because the kick hit happened so late that I already thought it missed.