I started using shooting glasses about 18 months ago, i now have a few pairs of Champion frames.
I had never needed glasses and there was a bit of a learning curve.
The first pair of frames was a hard spend but they turned out to be great, worth every penny, i shoot pretty much every day and never have any pain or discomfort wearing them.
I have two pairs of Olympic Champions which are brilliant frames, loads of adjustment, really comfortable, and a pair of World Champion 1 which are a cheaper and more basic frame, not as nice but they still do the job.
They are expensive as are the accessories but they work well, for me they have been money well spent but it was a slow and at times quite a frustrating process getting used to them.