Hi, xtsr.
I wanted this too. So, I had a look into it but unfortunately, it isn't possible. The positioning of Shogo's Glasses is tied to information in Shogo's mesh. If it were possible to make Shogo wear any other Glasses (it isn't), they too would sit on his head.
You might be thinking "What about the different Hat positions?". Each position of the given hat uses it's own unique mesh where the hat is at a different angle. I too assumed this would be the case with Shogo's Glasses, so they could be added as a separate clothing item, but sadly not.