2nd or 3rd Reviewer? Walk it the other way!

I've had a number of occasions where I've failed a route that someone else has approved and on investigation I've discovered that I've only spotted the fault because I was walking the route in the opposite direction to the other reviewer. Sometimes paths are easier to follow, directions seem more obvious and what is a minor annoyance in one direction, is a critical failure in the other. I understand that sometimes we don't get to choose which direction we review a route, but can I suggest that anyone who isn't the first to review a route and who can, walks it in the opposite direction to the first reviewer.