Whatever you decide, I just hope more content for Victoria, in my opinion she deserves more screen time and besides... well, she's really hot.Please don't take this a confirmation of anything, and I may be mistaken because I've said many things over the 4+ years I've been yammering here, but the only thing I remember explicitly revealing on the subject is that Vicky wouldn't get pulled into performing for the club as some big gatcha for Edwin and that her development lies outside the club story line.
Generally I try not to give away too much, especially when it's a reoccurring area of conversation like this one, so your confidence has made me curious if you could point me to any examples where I've concretely or even vaguely put the speculation to bed.
Still, I will say... for the question at hand, it is true that the text has made the depth of Ian and Victoria's relationship clear, and the conversation in the kitchen during 3.3 wouldn't make any sense if Ian and Vicky were banging.