as a cinematic shooter, I do my settings before the shot starts. it did take a week or so to get used to the opening, but that self sealing opening became critical for movie and television shots where the DP needs perfect exposure and high quality. i don't need to reach through to adjust aperture or exposure too often, and never while I'm actually filming a sequence.They're ok if your just snapping pictures, to difficult to get your fingers in the hole to do anything else at least that was my experience with one.
Also, they elastic on a new hoodman is pretty tight, but it loosens up a bit and becomes a non-issue. at least that has been my experience over the years using one.