OMT,

Relentless,

if you are that concerned perhaps you can get a full cage head gear. you might come across as a bit of a pansy, but it'll keep you from getting a broken schnoz. In this case, you'd be best off to tell your sparring mates to beat the crap out of you, cuz trust me, they'll want to. The way to earn respect when wearing something that nobody else is wearing it to accept the fact that you're a target.

http://store.titleboxing.com/title-c...-headgear.html

Tufwear has a couple that look quite protective
http://store.titleboxing.com/title-t...-headgear.html

but this takes the cake..

http://www.ringside.com/detail.aspx?ID=25830