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A guy I Ice fish with now and then has one of them. They show the depth but don't have detail for showing the fish. If just using to find the depth it worked great. I was always worried about dropping it down the hole when I used it.
I have a unit similar to that. The one strikemaster puts out. It works really good up to about 12 inches of ice. You do have to couple the transducer to the ice with water if you can do that it usually will shoot through. I use mine to check depth after I drill a couple holes to read the bottom. In the hole its an instant reading, no need to get the sounder out. I think the one pictured has more power then the unit I have, so it might shoot through the ice even a little better. It is a little tricky getting the water to hook the transducer to the ice though. I have found later in the season its almost as easy to drill a hole and check the depth. Early season when the ice is 6 or less and clear the thing works like magic. The vex unit also floats.