Yes that's how we do it. 1/2" glass and this is the cloth we use.
https://www.amazon.com/INDUSTRIES-4245-Emery-9-Inch-11-Inch/dp/B000BPNMZ4
We do a 2 step process - we rough both heads down with the new sheet, then we go back over both a second time with the "used" sheet. The grit of the cloth shears down and becomes finer leaving a smoother surface. I check the flatness with a granite surface plate, a machinists straight edge, and then the surface finish with an Ra meter. Ultimately my surface finish is comparable to what my cylinder head shop produces with their CBN flycutter. It's faster for us as there is no wait time for the machine shop and no drop-of/delivery. It's easier to just do it ourselves.
GD