Not sure if this is minimalist enough for you, but I ordered this distressed leather sleeve from Etsy (ships from China) which was the look I was searching for, and the shop had great reviews. They also do free monogramming. US$62 with free shipping.
Find the perfect handmade gift, vintage & on-trend clothes, unique jewelry, and more… lots more.
www.etsy.com
Note, the shop owner just messaged me saying that the 14" fits a bit tight because of the more prominent black feet on the MBP, but said if it is, to let them know and they'd send a new one. I should be receiving mine last week of November, so will post back impressions once I get it.