Lol, you are posting alot about this.
Does Oyama Karate do point sparring?
They experimented with it before, in preparation for full contact knockdown. They stopped that and only focus on full contact knockdown now straight from white belt. You start with padded hands and shins, and eventually move to no pads at all. You should be sparring in every class, and each belt rank you should fight a number of people, black belt is 10 fighters (some schools like mines consider it a celebration, which means you fight the whole class, and they invite other oyama/ kyokushin schools to add to your "celebration"), and these matches arent light, they are hardcore no different then a knockdown karate tournament, to get color on your belt you need to earn it.
Can you hit to the head?
With a kick yes, no punches to the face. Both Kyokushin and Oyama started to impement "fight technique night", or "fight night", which is full contact with full padding with face punches added. They did this to take into account fist face punching, its usually one day a week.
Is it reliable for self defense? How reliable on a scale of 1-10?
Thanks.
Yes, I have felt more confident, less stress management in bad situations, less fear in a confrontation (when i first time i took oyama, i returned recently) since we fought with light to no padding, and i wasnt scared to get hit, and already felt the pain of a full punch to my gutt with no padding and block kicks clocked at a bliding speed. Techniques are done on pads, and are unleashed on your partners, so you develop great power and speed as well as conditioning (you get your body murdered daily, my fists are cut up and my shoulder and chest feel like they are crying). Also, some schools teach kata bunkai for self defense, since this is still karate.
Like i said, try it out first. This isnt for everyone.