The "provision" is telling people that Impact hits are only from charging, not a bonus you get every round of combat or all the time, hence the reference to second round of combat. Otherwise you're looking at an unstoppable force/immovable object scenario. The rule is crystal that if you charge, you get them. Doesn't say but, doesn't say however - you just get them. Likewise, if you're charged, no Impact Hits are inflicted (per FAQ change, the "has no effect" was removed). If we take the second rule as an absolute we must take the first, as there is no grammar to indicate the second is a provision on the first.
It's either a roll off, or you get them IF you take the Counter Charge to be a normal Charge, which is debatable anyway. If they are not one and the same, then there is no question, you get them. Hopefully this gets FAQ'd into the main rules because the overrun example is a good one. I'd say you do get them, but it's not Empire specific at least.