Followup:
I received the knee pads this week and have been wearing the knee pads for a couple of days. The factory offers two kinds of pads, a hard and a soft, I ordered the soft.
Everything is tradeoffs and these kneepads err on the side of serious protection. They are effectively a double layer of stiff foam. The good is that they offer a lot of protection. The negative is that they are bulky and very obvious when being worn. If I were on a SWAT team, these might be a great solution. For someone who wants some incidental protection because your knees are old, these are a bit much. I like the size and placement of the knee pads in these pants. I may try to find a source of some thinner, single layer foam and make my own.