You know, when I first got the VX, the rearward visibility was tough to get used to, but now, almost 2.5 years later, I don't even notice the poor visibility and I rely completely on my side mirrors. I always check my blind spots before changing lanes, but seeing out the back window doesn't even phase me anymore. So, I think, if you are generally a good, defensive driver, the visibility issue is a non-issue....but that is just me.
Bart