yeah, it would have to be a deep socket for most applications. The Happ pushbutton wrench has a shallow end and and deep end for that purpose.
I'm sure a real metal socket would work just fine, and probably wouldn't strip very easily in all honesty. The button nut is thick enough that you'd have to really try to strip or break the nut.
I still say they are worth the $2 though if you are ordering from someone/somewhere that carries them.