I admit the main reason I use leather for an EDC bag is because it's stylish. I can wear good leather with almost anything. Another reason is that good leather looks better with age and use. It saves money in the not-too-long run. Those are, in fact, practical reasons for buying leather in an EDC bag.

I looked at Coronado Leather. It appears to be good quality leather, but they don't seem to put much thought into the design of their shoulder carry manbags. They need to get with the times. I'm looking for a brand name that is a legitimate competitor to Saddleback Leather. I have experience with Rustic Leather and Vagabond, but I'm not totally satisfied with their options.

Side note, my idea of an EDC bag seems to be quite different than what some people have posted here. I can't imagine some of the backpacks actually being everyday carry for anybody. To me, EDC means exactly that. It's a bag I can imagine carrying 365 days per year. I'm talking about carrying it with me almost everywhere, not just carrying it to my car and leaving it in there.

The litmus test for me is the following: Can I hold this bag comfortably in my lap while I'm at my desk working on my computer? If yes, then, I can use it as an EDC bag. Again, however, I understand everybody has their own needs and style.