Folks, Really thinking about pulling the trigger on a new Aero Anj4. Pretty sure I'll get the jacket done in seal brown with seal brown trim, but am agonizing about whether to get the long or short zipper . I will wear it while driving quite often, seems like the short zipper may be preferable while sitting. Any opinions as to the right choice? Also, do the Aero ANJ4's fit true to size? I fit very well into my Aero 42-18775-P A2 and wear a 46 in most other jackets, so would be inclined to order a 46. Thanks in advance for your opinions.