Temptation Warlock's healing in PvP - viable or not?

So, I'm playing a Temptation build for a while now. My GS is still not very high (around 11.3k), but I manage. I like the mobility Eldritch Momentum provides, the damage is still good enough to easily melt things down and it's actually surprisingly easy to keep people up in PvE. PvP, however, is where things get a bit tricky, hence the thread.

The thing about healing in PvP is that things are much more hectic, fast paced, mobile. It's not just about standing near your palls, because they can be in many different places - you have to decide who needs help and then stay close to them - which is the first limitation, esspecially when your basic defense is your mobility. People are also often getting focused and Temptation warlock lacks the ability to easily answer this with a focused healing - we have no direct heal, obviously, our heals are limited by opponents availability. Many of our skills are also DoTs, which can have a negative effect on healing done (sometimes they won't reach their full damage potential before the adversary gets mowed down by other players). Last but not least, we can't get people's HP up between the fights - no way of supporting their own regeneration (or lack of it).

Right now, I'm mostly playing in PUGs (it's gonna change, but it is what it is, for the time being) and because of reasons pointed out above, I'm not entirelly sure how useful my healing really is to the team. Before I fully commit to the build, I would like some feedback from more experienced Temp locks, both those playing in PuGs and premades. Possibly also players of different classes, who know good temp locks and play with them often. How good of a healer you feel you (in case of warlocks) or they (in case of others) are in PvP?