New travel idea?

So I was online looking at some different ideas for christmas gifts and I had a idea!

I was looking at some different leather goods, and I saw a toiletry bag with a pretty wide strap on it, all leather.

Then I thought about it, and I realized that it wouldn't be too hard to have a strop be a strap for a bag if you put two swivel clips on it, one per end. It would even be possible to have a slide on it to adjust the length for stropping vs carrying?

I guess the weight of the bag could be a warping problem and the right leather might be too stiff for a comfortable strap, but at least for the canvas/linnen/wovennylon step you could do alright I think. I also think you could get by for a week or so with only a canvas strop but I've never tried it...

Maybe its been done before but I was feeling inspired!