Honestly I've been trying to weave in stance dancing more now that I'm turning Odile into my main and am thus re-leveling all the classes again, but I've always been a fairly cautious healer. First and second time through an instance I'll likely keep to only throwing out Aero I, II, and III dots for the vast majority of the content - peppering in a Cleric Stance'd Assize here and there both as an MP regen and as a high powered stab. Third time is usually when I start getting comfortable enough to DPS for most of the instance, barring a near wipe, and after that I do it as needed. If I'm in a raid and the other healer wishes to DPS, I'll stick to purely healing. If the other healer wishes to stick to pure heals then I'll take on the roll of mixing in my DPS stance. Etc. Etc.
I will say though that if I'm having issues with the rest of the party, be it the tank or the DPS not using cooldowns and standing in the damage puddles then I tend to reign myself in and stick to healing exclusively. I'd rather be accused of slowing the dungeon down by keeping to my Aero dots exclusively than blink into Cleric's Stance only for the problematic party member to eat a cleave and a damage puddle before I can successfully pop off a non-Cleric'd Tetra.
All in all I very much think it's up to the comfort of the person involved and the situation they find themselves in. I'm not going to begrudge another healer for failing to DPS outside of specific circumstances. In fact the only time I ever get annoyed is when I'm running the first few dungeons and the healer literally just occasionally throws out a cure while otherwise picking their nose... If the healer has the job above thirty, and thus should know the instance by now, I expect them to at least throw in an Aero rather than Hildebrand the night away between heals.
I will say though that if I'm having issues with the rest of the party, be it the tank or the DPS not using cooldowns and standing in the damage puddles then I tend to reign myself in and stick to healing exclusively. I'd rather be accused of slowing the dungeon down by keeping to my Aero dots exclusively than blink into Cleric's Stance only for the problematic party member to eat a cleave and a damage puddle before I can successfully pop off a non-Cleric'd Tetra.
All in all I very much think it's up to the comfort of the person involved and the situation they find themselves in. I'm not going to begrudge another healer for failing to DPS outside of specific circumstances. In fact the only time I ever get annoyed is when I'm running the first few dungeons and the healer literally just occasionally throws out a cure while otherwise picking their nose... If the healer has the job above thirty, and thus should know the instance by now, I expect them to at least throw in an Aero rather than Hildebrand the night away between heals.