Need Help!- Bearing location

[Drools]

I'm starting on my Y Axis and I a question on the location of the bearings.
In the attached pic the bearings are located on the inside of the rods but I have seen designs where the bearings are on the outside. Does it make a difference were the bearings are located?

[Foxman]

If the bearings are mounted outside then you can brace between the pipes improving the rigidity and stopping bending distortion in the pipes when tightening the bearings.