I decided to use this pattern for the professor's vest and I made the design adjustments that he requested as well. He asked that I make the v-neck a deeper/lower cut and had specific pocket requirements. I modified the pattern for a lower v neck and had to go back and modify the pattern at the waist as the length of the vest was not going to work. Over all this pattern is great. By the way, Simplicity does not specify to make the lining any larger than the actual garment pieces. Typically, a lining should be cut slightly larger. In anticipation of the added bulk of a sew in interfacing, I went ahead and cut the lining slightly larger.
This is my trial vest that I made out of a damaged sheet. I am a firm believer these days in making a trial run of a garment to get a general feel for the pattern, size, etc.