I can only comment on Cubase Pro 11.
What do you mean by "Warlock only works as a VST3 plugin"?
What happens here in Cubase is that it only SHOWS you Warlock as a VST3 and HIDES the VST2 version (so you cannot choose Warlock VST2). Unfortunately, this is what Cubase does, so consider this to be "normal" Cubase behaviour (it does this with other plugins as well). As I see it, there is nothing you can do about it.
Try this: Delete Warlock VST3 in your VST3 folder. Then you should be able to see Warlock VST2 in your instruments list (and therefore to load it).