I'm going to ignore anything about style, fashion, brand image, etc. The simple problem is merging high quality & synthetic in the same sentence, as nobody really has experience with this because: 1. I'm not sure it even exists 2. If it does (i.e., good synthetic leather), then it would have to be bespoke because no high-quality shoemaker would use those materials. I doubt anybody on this forum has asked what you are asking To have truly vegan soles, you'd need to swap so many different leathers for synthetics, cellulose board, etc and I think you'd have a complex mess on your hands. Plus, I'd wager even with a good synthetic, you'd lose the breathability of natural leather and thus your feet would become puddles!