Ya I have some mirrors and optics as well, and there useless without goggles. You cannot replace your eye if a beam happens to reflect and and catch ya in the face. It only takes one stray refection and its over. I know its not as cool viewing some of the beam splits and what not with goggles, because it blocks it all out, but use a camera to take pics of your creations.
BTW if you want to get a pair for a good deal, just buy them from the buy sell and trade section. You will see them for 30 - 35$ shipped quite often which is a good deal. Thats what I did. The most common seems to be the laser shades ( from wicked or Dragon lasers). These protect against 532nm ( green) and 405nm ( blu-ray or Violet ). Hope that helps.
-Greg