I've used the Osprey Escapist 32 for a few trips, and it’s been quite versatile for both city and light hiking. The backpack is durable, with a rugged design that holds up well under different travel conditions. It's especially great if you're spending time in urban areas and then transitioning to outdoor adventures, thanks to its multiple compartments and well-thought-out organization features.
Regarding flights, I’ve found it typically fits within most airlines’ carry-on size restrictions, but it can be close to the limit when fully packed, especially with the included rain cover and bulky items. I always make sure to double-check specific airline carry-on dimensions and try not to overstuff it.
For efficient packing, consider using packing cubes to separate your city and hiking gear. This makes it easier to switch gears without unpacking everything. Roll your clothes to optimize space, especially since the top-loading design can make accessing items at the bottom a bit tricky. Use the additional attachment points if you need to carry extra gear like a lightweight jacket or camera case externally.
Overall, it’s a solid choice for those looking to blend city and nature travel without needing to switch bags. If you need to pack heavier or more specialized equipment, though, you might want to consider an alternative with more space or specific compartments.
Have you considered what kind of climates or terrains you’ll be exploring? That might help fine-tune how you pack and optimize the backpack’s features.