I recently removed "Healing Touch" from my raid toolkit entirely. The first week of SoO, when 2 healing fights, certain ones me and a shaman would be struggling to keep up the tanks. There was many cases where they would just die in between my Healing Touch casts, even though I was spamming them to keep them alive. For the next week I did some research and found most druids now don't even use Healing Touch anymore. Putting in the numbers, HT was still slightly more mana efficient in HPM, but RG was had much better HPS. I decided to just give it a try for next raiding week and healed strictly with RG w/ the glyph. Although I did notice my mana being drained slightly faster, my healing numbers in practice improved by quite a bit. We also pretty much one shot everything and the tanks died a lot less often.