Sometimes I sign up to test patterns because I simply love the design and it fills a hole in my wardrobe, and sometimes I sign up to test because I love a good challenge. In this case, it happens to be both of those reasons. I learned last year that I love wearing vests on chilly, Arizona days. For me, vests seem to supply just enough warmth, while also giving me extra pockets, which always seems necessary. So when Kennis (Itch to Stitch) asked for testers for her new Envigado Vest, I jumped on it! I even ordered fabric and supplies before the test began, which I never do. However,…