Well it looks plausible that Barney and the stripper will soon break up. Of course it is also plausible that she will quit being a stripper for Barney and she will be revealed as the wife. If Robin doesn't end up with Barney, where else can her character go? That seems like the only path for her from here. Whoever the wife turns out to be, it all comes down to the one hour season finale. The next two weeks can't go by fast enough.
I don't think there's any way for this relationship to suceed, it just isn't right. Barney's not happy with who she is, and she's neither willing to change nor happy with who he is. The relationship might be a step forward in Barney's life, but it can't last.