they also run 12 point bolt's on many marine exhaust manifolds, big blocks.. the ones that run into the head... I see all that stuff fairly frequently, but than again, in my biz I see a vast amount of poo most don't, on ALL front's, from electrical to finishes to drivetrains, etc.....
that said, I'll take my "bleeding every day torture" over being a dealer mechanic............................. I think...
I have the snappy "twist" sockets, and they do get fubared bolts out a fair amount of the time when rotted like those head bolts, but it is often a carbide burr/die grinder gig on a few of them... "pipe wrench the stud out after" gig...
the head bolt's where a nightmare just due to the torque of the fastener..
the funny part of being a marine guy is when I got into the biz, I had a fiberglass background with the resto of Mack trucks and such, had painted 2,000 cars in the collision shop, went to school yada..
but gelcoat cosmetic stuff? that requires every bodyman color-matching skill I could EVER muster... making a crashed BMW look like it had never been hit? no big deal at all... gelcoating a boat? truly, truly requires all the bodyman skills I've ever learned..
anyway..

back to tools...
my one boss buys complete cr@p.. HF stuff... borrows stuff constantly... he's a smart mofo too, I'd like to see what he could actually do with some quality snappy stuff!
even for guys in my biz.. you can get by with craftsman type stuff... but over the long haul, for your daily hand tool needs, the high-end stuff pays for itself in those little "space-saving, grip better. etc" type situations...
and with snappy stuff, believe it or not, it is the odder things you wouldn't think of.. screwdrivers.. chisels.... weird stuff... that you find the huge advantage in addition to the staple sockets, wrenches and such... ain't a cold chisel around that'll hold an edge like a Snappy..