Thank you for a very well written out reply to my question, I think from it I will look into Twill rather than tin cloth, because I had a J Crew Abingdon in the past which has the same loose form that is similar to the tin cloth and I wasn't as happy with it's lack of shape.
I never treated my bag, owned for about a month now, carry it most days, my handles do not look anything like that where it looks dry. It's still smooth on both sides of the handle, hope this info helps you.
Thank you, would you happen to have any of their wool fabric material products too? Thinking of whether to grab a tin cloth field bag, wool field bag or stick to the canvas. I have a canvas brief and know the quality of the canvas is top notch.