This works too. My only issue is when people let the opportunities go to waste, in the short-term as much as long term. And since the STR-nerf, these shorter-term opportunites even more healer-centric.
For instance, I had a near opposite experience with a "I'm only going to DPS" SCH. I kept myself up with Clemency, and tried to CD as best I could to make sure he got all his Banes (and because the raid dps was low, second Banes) off easily. The only issue was that his refusal to Aloquiem or Physic would often lead to him wasting an AF stack on Lustrate as I was literally out of all possible options to keep myself up (had all of HG to heal me), when he needed it to Bane. On the first boss, he thought I was squishy because he had to heal me 5 times when I was in Sword Oath (I was outdpsing the two dps), and said I was reducing his dps (I noted that he could adlo before I hit 25% and actually maintain his DoTs instead). I did the 2nd boss mostly in Shield, and then went back to Sword for the last, where I did more single-target healing and combined HPS/DPS than he did, while still being top dps.
Issue: he was too hung up on using my being able to heal myself to keep track of when and how it might be limited, in the end costing himself dps by being overly aggressive.