Xarlen said:I don't think so.
That's really undercutting a Vampire Barb.
Other things that run off Con are not denied to vampires.
As it's stated, a Lich or a vampire Psion working off Con uses their Cha modifer, I believe.
Charisma....interesting. Maybe I will use that (although, this Half-orc, even with the boost for vampirism to cha, still has a low one)