If this Regen doesn't take you out of yellow hp, it sounds ideal for use with the level 50 JSE rings (THF:Steal+3, NIN:Haste+4%, WAR:Double Attack+2%, BST:Killer effects+3, MNK:Counter +2).
Hmm...correction: Latent condition is orange HP or lower. So it only heals you up to 50% HP, at 1hp/3sec.
I was wondering if the latent effect "regen" would work if equip this belt right when your hp is low. It might come in handy when soloing or farming to cut down resting time.