I looked it up, and the POV winner has only once been the non HOH non-nominee, and that was Michael/Cowboy. He left the noms the same (Diane and Nakomis), and cast the sole vote as is always the prerogative of the one who is not on the block (and not HOH).

No one in that position would ever need to save someone by taking them off, because that person has the sole vote, and can save whichever one he wants in the vote process, not through the veto.

Only one other time has the veto winner not been a nominee, and that was BB9 when Ryan who was HOH won it. He did not change his noms.

The only two veto winners who were nominated and didn't use it on themselves were Marcellus and Danielle. Marcellus was at F5, and as we know paid the price for stupid.

Danielle left herself on the block and saved her father. This meant ##### was the one with the sole vote.

To sum-up, there are always two nominees. There are always two choices minimum for the vote, even for the final round, when the HOH gets the vote. The POV winner does not automatically get the sole vote at F4. It's the person who isn't on the block or HOH. In BB8 and BB9 both, the players voting (##### and Adam) were not veto winners.