The biggest drawback is vansons mainly come in black right? Im considering a nonblack crosszip, maybe brown or cordovan or oxblood etc. The 641hh is pretty stiff but I did use it for riding a lot last season and it was fine. best way to break in a leather jacket is to wear it, while riding
You can get a custom Vanson for a 15% surcharge; this charge covers both fit changes and alternative leathers.
If you want Chromexcel in particular, you could go Johnson Leathers in SF. Price point is comparable to Aero but the patterns are really built for riding.