[Cory]

Realistically it makes no difference if you flip the part and end up with a slight offset (.010 might be the low end of repeatability if you very carelessly used a stop). Your vise is going to maintain the same Y zero (if you have no DRO and backlash it would be off a little, but it still doesn't matter when you're talking about a few thousandths), and the bearing block never contacts the X-wall of the pocket.

We machine ours through in one shot, but if you had to flip it you're never going to notice the difference.