The quality will be poor as VRP-M requires high carrier modulation to achieve good diffraction efficiency. Since the Denisyuk technique is typical of small carrier modulation the brightness of the final reflection hologram will be disappointing. The same was true for Agfa 8E56. VRP-M. Hence the image will be brighter, clearer and you ll be able to see into the hologram to a larger distance . Yes, those made with the finer grain materials will be clearly superior.
M does produce significantly better results.
Yes, no problem. Many holographers are using this technique. M depending on the final image quality required. Just check that your YAG laser is designed for Holography. In the SM-6 developer Phenidone is required.