Xen VPS-- Are they KVM/HVM or PV? And prometeus's Xen in particular

Web VPS

When a provider says's their Xen, do they usually mean Xen PV or Xen HVM? It seems like most will simply list their various options as OpenVZ, Xen, KVM, but don't indicate which form of Xen.

In particular, can anyone say which is used by prometeas's Xen?

Do most providers, especially of HVM & KVM, allow iso uploads for a custom OS? If they do, would it be an abuse to install something like ESXi to spin up my own VMs within the VPS? (Not to resell)

LowEndTalk http://ift.tt/19nG3eg Xen VPS-- Are they KVM/HVM or PV? And prometeus's Xen in particular Web vps hosting server Linux - Windows webvps.blogspot.com