Not to put a damper on anything (because IMO shooting without glasses ANY TIME is criminally stupid!) but you'll have to pony up some money to ensure you get ANSI rated SAFETY LENSES in your glasses. Here's the problem, in the event of "an event", you need your eyes PROTECTED, not filled with shards of glass or plastic.
You need safety glasses.
Some stores like America's Optical can provide you with safety lenses that are NOT safety rated but the same stuff, only thinner than spec....and less expensive...... but if you have an accident you'll be in a real fight with insurance.
It is my sincere opinion, backed by personal experience, that you can take this as a positive development and just get the safety glasses. Once you've worn them and especially once you've USED them, you'll feel naked without them.
I/we have two pairs of "used safety glasses" hung up, one from work and one from play, in both cases we feel that a person would be BLIND without the protection.
I'm with Steve, adjust the scope to the glasses.
As an aside, I had my shooting safety glasses tinted light amber and polarized and I'm convinced I can see BETTER through the scope with them on. (I know this is slightly illogical beings as I've added a lens and two surfaces, but the amber so intensifies contrast that for me it's "better")
anyways...... get 'er done
al