Looks like a poor choice to me. It weighs 28.2 pounds empty, which is equivalent to 3.38 pounds of water such as you would have in a backpack sprayer. It appears to be a misting type sprayer. There is no telling how much off-target damage you could cause (and be responsible for) by spraying gly with this.
If this is the only thing you spray and want something lightweight and inexpensive, try a hose end sprayer. Calibrate it with water only on your driveway so you know what your output is. Use a coarse spray. Do not use the hose end sprayer for any other chemical just to be safe. In other words, you will only be carrying a quart jar size sprayer up and down the hill and dragging a few lengths of hose.