I'd prefer a natural shoulder on that SC. Really all-around soft construction is best for wear with jeans, but you can get away with some structure so long as the shoulder is (visibly) un-padded. Here you have too square of a frame on top, which stands in direct contrast to the wavy, louche look of the jeans. The fabric of the SC also looks worsted. If it is, that's a deal-breaker. The fabric needs to be REALLY spongy if worsted (think high-twist fresco). Otherwise, a coarser weave is the only way to ensure success. I'd also go a shade darker on the jeans (and possibly get a pair that fall a bit cleaner if you're going to wear them sans-stacks). Last thing: I would un-do one more button on the shirt. If you decide to go jeans with a SC, you need to distance yourself from the office as far as possible.