Perhaps I wasn't clear in the original post. There are two swords with basically the same name. There is the "Longsword" which is craft-able by blacksmiths and the most commonly seen of the two, and then there is the "Long Sword" (as pictured in the original post) which does not appear to be craft-able and is very rarely dropped as loot if at all (not positive about this). These two weapons have the exact same base properties (14-18 dmg, 3.5s ws) however one is widely available and the other is not. I personally really like the artwork of the "Long Sword".
So to answer your question
@Izzy MBC , I would define relevant in the context of in game items as something that is both craft-able and commonly seen as drop and perhaps usable. Not being able to craft one of these suckers kind of rules out the using imbuing to make it useful due to weight constraints. Maybe I don't hunt enough, but I never seem to see one of these drop with magical properties i.e. lesser, greater artifact.
I guess I'm just curious why this particular version of the longsword seems to be neglected. Anyone - feel free to call me out on this if I'm wrong and post a picture of a decked out "Long Sword"!