Vampire Instagib

As it stands, the modifiers for vampire and instagib cannot both be enabled at the same time. However, I feel like there is a way to get them to interact well.
This is how it would work:
I've implemented this (in a very hacky, unclean way) and have found it fairly fun. It is nice to be able to build up a health buffer when you're on a roll, but at the same time it doesn't feel like anyone is indestructible.
Thoughts?
This is how it would work:
- Every player would start with 1 health, as in instagib
- Shooting and hitting someone would increase your health by 1
- However, being shot would decrease your health by 2
- There is a health limit (maybe 10 or 15)
I've implemented this (in a very hacky, unclean way) and have found it fairly fun. It is nice to be able to build up a health buffer when you're on a roll, but at the same time it doesn't feel like anyone is indestructible.
Thoughts?