Actually, I didn't know he was blind. I'm pretty new here.
The other issue with live miking is the ambient noise. No matter what you do, it will pick up sound from nearby, especially in a noisy club. I imagine Segovia had silence when he played!!!
BTW, I have done that in the past, back in the day when pick-ups were not all that great. I used it to add to the sound, but if you shift the guitar at all the sound and volume changes. Pick ups these days are much improved, and cost about the same as a mike and boom stand.
Bushice