That reminds me of a couple of "univeral spanners" and "universal sockets" that family members have bought me for presents down the years. Often, they work just fine on a wide range of nuts...provided

1. The nut stands proud of the surface it is clamping and isn't sunk into a hole that the universal sockets bulk doesn't allow it to descend into.
2. The nut isn't adjacent to a surface, cross-member etc. that would prevent the uni-gadget to fit over it.
3. The bolt doesn't protrude through the nut too far for the biting surface of the gadget to come into play.
4. There is enough room above the nut for the invariably bulkier-than-the-standard-tool gadget to be manovoured.
...

      16. And in one case, requires me to dig out the engrish intruction manuel (long since lost) to work out how to use it.

Similarly, I bought my father (a carpenter) an electric circular saw (sometimes called a skill saw in the US?) back when such tools where expensive. He rarely made use of it. Even when working at home, where availability of power wasn't a problem and he didn't have the burden of lugging its 20 lbs of weight to the job, he would still use his panel saw to halve an 8'x4' of 3/4" ply.

The set up time simple outweighed the advantage. He was skilled enough that he could do just as accurate cut by hand anyway. And darn nearly as quickly.