Do you guys have any experience with f-stop? I'm very hyped about the Tilopa 2015 edition:
https://www.youtube.com/watch?v=f5q4nFFONF8I'm mostly hiking in the mountains to make videos and therefore a dedicated photo backpack kinda makes sense. Although to be fair, you can stick an ICU in every backpack and have about the same result. But still I think the Tilopa seems very cool and the price is reasonable, even compared to normal day-packs.