Re: Nothing wrong with it if you get it right.
The well-tempered jacket-and-jeans look (dark-wash jeans, as you say, in good fit and condition - and I'd restrict it to a dress shirt) is quite common on men presenting at academic conferences and that sort of thing, as well as in business.
Academic conferences tend to be semi-formal affairs at best, though. While many of the old guard and the more-nervous (as well as the rare fashionable types) men wear suits, they're often outdated and of questionable style. The brown corduroy jacket with leather elbow patches really is a staple at gatherings like the Modern Language Association's annual hootenanny (one of the larger events of the type). And that's if you're lucky - I was on an elevator at MLA once with a guy preparing a talk; his suit jacket was so frayed at the bottom that several inches of thread were hanging down. The Homeless Professor look is not terribly cool.
So at that sort of event, high-quality jeans plus, say, a black velvet blazer over a good designer shirt is rather a breath of fresh air.
I wouldn't break that outfit out for a chat with investors, though.
 At least in my fields - computer science, software development, English literature, rhetoric, and, when I'm so inclined, technical writing.