I wear the "sport socks" as they are, yes, you do get a see-through look, but at any distance, you really do not notice it (generally).

This is an obvious result of the yarns used in making them. They are comfortable, but it's a personal choice, of cost, wearability, and comfort.

I am looking forward to having true Kilt Hose (my wife is knitting a pair), but it is not the most important thing I have to deal with, what I have does fine!