I've done this for as long as I've been on drop bars, since the early 90s. In that decade, some goose in a bike shop had the temerity to start reefing on my levers out of the blue when he assumed they were like that from being crashed...
To my eye, the fact that almost everyone else points them straight ahead doesn't make that look any less dumb. IMO the way to line them up for looks is with the inner edge of the hoods pointing straight ahead, which gives more or less toe-in depending on the levers; it does look a bit rad with 1st-gen Ergos but fairly subtle with anything else. But yeah, the reason I figure it looks better is because that's where your hands want to be.