It will depend on how it is installed in my experience. If the sump area is closed then it will not be that bad. You will hear it when you take off the collection cup or the lid. If it is plumbed correctly with a properly sized pump you will not hear any humming.
If anyone has exceptional hearing they may pick it up. If the sump area is open, they more than likely will. No one mentioned it over the years and I have had it in the cabinet closed and more recently open.
But as you noted venturi skimmers can be louder than others. Small trade off on performance. I can't help with the "try" part because I'm a bit biased after owning one for so many years. I feel they are the bees knees. But honesty in reefing if one has sensitive ears they may hear it.
I've worked around fighters for so long my $0.02 is sort of useless :D