I don't have 1/2 drive swivel sockets and just make heavy use of 1/2 swivel adaptors. I've worn out matco pinless and snapon and even sheared the pin once on a snappy. I hit them with wheel bearing grease every so often. I'm not sure if it really does much for wear, but makes them move better when stiff. Also fling grease everywhere, right after I grease them, maybe next time I'll try the white lithium grease spray. Should be less messy
I should just break down and buy a set. They never go on sale on tool trucks. Maybe an astro set