Baked Potatoes - Cooking Tip

I posted my favourite Coleslaw recipe recently, and mentioned how great it tastes when topping a baked potato.  Further, I thought that I would share this baking tip that I was once given by a chef... 

When wrapping potatoes in foil to bake in the oven, wrap them with the shiny-side-in.  Apparently it makes it cook quicker and makes the potato skin crispier?? 

I have no idea if this is true, but I guess I just formed this habit and now it has stuck...  And my potatoes always come up really yummy, so it works for me!