Question about Peak Design travel backpack

There are plenty of independent reviews on YouTube that I can recommend. They also show the interior sufficiently, e.g. by Chase Reeves. That's how I decided on the backpack and have been satisfied for years.

Which interior layout? The backpack comes without internal pockets, you can fill it with either a camera bag (small or large depending on the photo equipment) or clothes bag, shoe bag and with a wash bag, depending on how you use it.
Reading and googling helps enormously.