I dont remember to ever score a round 10-8 in my life (without KDs or deducted points). I have to say that I'm extremelly biased against that score, though, and probably that's the reason why I never use it. I think it should not be allowed.
I don’t score 10-8 without a KD. If a guy is getting beat up but on his feet, then 10-8 is just an insult. If the beating was that bad the fight should be stopped.