I'll defer to DG if she differs, but for me, vore would pretty much incorporate contro for those who aren't into vore. For those who are, vore wouldn't be contro, however, and it might be refreshing for them not to see it labelled as contro. We don't label M/M contro even though some people might consider it that. (Can you tell I used to argue with Jesuits for shiggles? )
Dubcon versus rape is a whole other ball of wax, though. If there's clearly no consent, it's rapefic and that's one tag I do not play with. The last thing I want is a reader having a horrid flashback because someone doesn't want the "stigma" of labeling their fic a rapefic. In fact, when modding, dubcon's a tag that will make me look twice at a fic. It's an exceedingly fine line, and I am very conservative in my definition for the sake of our readers. I tagged one of my oneshots as a rapefic although it was fairly low key because no matter how low key I tried to make it, it was rape. Period. No bones about it.
As far as vore, you do realize you've issued a challenge there, right? Only with my luck, Harry will also be pregnant.