Thoughts on gargoyle stone plate?

Before the item came live on servers I was onboard with the idea that this item was a perfect fit with poppy. But after trying it out, i don't feel the same anymore. Granted, I only tried it maybe two or three times, but from the times that I did, it just felt underwhelming. The passive is awesome, but the thing that turns me off is the passive. Increased health is dank but the reduced damage is too much for me. I don't feel like Poppy's cooldowns (especially on her q) are long enough to just blow them on the enemy team and call it a day with stoneplate. I think Poppy does enough damage for it to matter in a teamfight, but the item active just cuts that by more than half.

If anyone can prove me wrong I'd welcome it. The stats on the item alone are enough to make me want to buy it, but I'm reminded of how much the active hurts my potential damage. If anything I would like some guidence on how to best use the item, or tell me if it's in anyway worth more than any other tank item.