Complex sentence: The artistic features of the dōtanuki swords are rather unremarkable, supposedly due to their lack of the laminated construction that most other Japanese swords have, and most books on nihonto don't even mention this school, or do so only in passing.
Split into simpler sentences: The artistic features of the dōtanuki swords are rather unremarkable, supposedly due to the lack of the laminated construction that most other Japanese swords have. Most books on nihonto don't even mention this school, or do so only in passing.