As intimated above the ill-fitting Royal looks a complete mess - as do most old school canvas packs - unless fully loaded and carefully at that. The picture perfectly demonstrates the need to modify with a drawstring closure on the main compartment as at leat now single components, such as camera kit, will only rattle around rather than fall out!
This however is the price to be paid for the must-have retro Bushcrafter look that singularly spurns something approaching 100 years of packpack development and refinement.
I feel certain you would be better served by a modern and thoughtfully constructed 35ltr pack from any of the better known brands albeit I accept it won't go so well with your leather hat.
K
I'm not sure why I feel the need to justify myself, but I do.
I have a number of modern bags from the likes of Lowe alpine, Lowe pro, osprey and berghaus. Different styles from day packs to 95L monstrosities.
Yes for the most part they serve their functions very well. They're lighter and more comfy in general than my canvas pack. The issue though is that I don't find them durable nor very multi-purpose.
I have a varied lifestyle, some days I'm fieldworking in gorse, other days walking the dog in town. I've made multiple overseas trips also. It felt like I had a bag for every situation, but not one that was general purpose enough to cover them all at a pinch.
When going overseas I'd be stuck with my camera bag as carry on, leaving little room for other stuff. With the canvas it's very versatile and expandable with the straps, so that I managed to take all my camera kit, a laptop, chargers, spare clothes and a coat and a book on my last few flights in the backpack. At the other end I can empty the bag, cinch it down and use it for other things more easily than my camera bags.
Similarly the modern hiking bags I find can be restrictive in their shape for what you can store.
And finally, it's a canvas hat, not leather