Masterforge,
Here's my 2 bits concerning headgear.
A face mask on headgear moves the effective target closer to the opponent. Its like having a big face, if you catch my drift. Thus, a punch that would have only touched, now touches a good 3 or more inches, i.e. more power gets put into your head, and your targetting/movement gets changed to accommodate. That's what bugs me the most about face masked headgear. You may find it easy to tag someone wearing facemask, wearing gloves, but a lot harder to tag someone barehanded without any headgear. The inch or two of glove, and another 2 or 3 of facemask makes a difference.
Face mask does however disperse the energy to the entire headgear, instead of your nose, lips, ears, etc.
Also, you have to use gloves if you use a facemask, or your opponent will cut up their hands on the face guard. (more at the end of this post on that.)
A regular boxing headgear, like the ones recommended by several guys, with the 'cheeks' on them, likewise protect the nose by in essence building up the area around it, so when you get hit in the nose, the padding supports it a bit. They change the range a lot less as well, making it more realistic.
I agree, they do mess up your vision, especially if your opponent tries to slide it around on you as you spar... I would never do something like that myself.... Its not like boxers just invented them yesterday, they are a bit of a proven technology for gloved sparring.
There's also nothing to cut up bare hands, but practically speaking, you probably still want to use gloves.
As you refer to eye attacks and grappling, I'm thinking that perhaps you aren't wearing gloves, or you are wearing MMA or San Da Gloves? See the problem? Facemasks are for protection from gloved hands, yet gloved hands don't eye gouge without a lot of effort...
Another thing headgear is good for is exercises - armoured coach against un-armoured trainee. Coach wears vest, helmet, gloves, shinguards, forearm guards, in whatever combination, and plays a free flowing variable drill against a student, who has to deliver some power into a defense/attack. Coach can whack the student with a gloved hand whenever necessary, yet the student gets to practice open hand techniques as required. Coach is expected to be a bit better able to protect his head, but when they do get through, it's no big thing.
May not be your cup of tea, but its good for training traditional techniques into effectiveness without it becoming just another kickboxing exercise.
I know lots of people who don't spar 'full on' all the time, sometimes you out-skill your opponent, sometimes you're working a particular skill, sometimes, you're just playing with friends and you're not into it - millions of reasons. Anybody who says otherwise must be from a Galaxy Far Far Away...
Guangzhou Pak Mei Kung Fu School, Sydney Australia,
Sifu Leung, Yuk Seng
Established 1989, Glebe Australia