I've wondered about this too, and even voiced the question in the forum, without a reply.
So, you go to an HV or VV mod. And, you use a HR atomizer. Yeah, seems pointless to me too.
yea me too. If I use a regular joye 510 on a 5v or 6v device it gives massive TH and warm vapor...if I use a HV atty it hits almost like 3.7v....pointless IMO.