I will say that I've seen those right angle adapters in downtown Fredericksburg, VA where older buildings were built so close together back in the 1930-1950 era. There weren't a lot of rules back then. The existing building was fine, but the new building was allowed to be put up with only two feet between them. The power company used to be a city utility at the time and welcomed any kind of new development, so they didn't dare make existing building owners move their services.
Now that their electric utility has been sold for decades, the current poco has been known to use these adapters since their readers can't fit in those spaces, not to mention the fact that these alleys are full of you know what.