So I was out testing my new pet regen cape (which is awesome by the way) and I noticed a few things:
1. Regen vorseals appear to apply to loupons
2. Life cycle is definitely dependent on your current HP (not your max HP).
Some numbers:
Life cycle from regen set in regular area: 626 (38% luopon HP healed) HP: 1782
Life cycle from regen set in escha: 686 HP: 1962
Life cycle from boosted max HP set in escha: 686 HP: 1962 Total HP: 2213
Life cycle in escha w/ HP maxed: 774 HP: 2213 (42% of luopon HP healed)
I was only marginally thorough here, but this seems to indicate to me that the amount of HP life cycle transferred varied with my total HP (although it was always around 35% of my total HP) and had an affect on how much HP the luopon visibly recovered. I lost around 25% of my HP. So while it isn't really practical for gearswap users, it was just interesting to me, and has been something I suspected due bad life cycles while weakened.