– Positives: - thematically-arranged, though this can make it more difficult to search - lots of headwords Negatives: - detail for respective headwords varies quite a lot - some have a lot of detail, others don't - the author has merely looked at other etymological dictionaries (and some other books) and attempted to give a synthesis of their pronouncements. He hasn't - apparently - read hundreds of scholarly articles on individual words to arrive at his conclusions as Kluge did. I could have done the same as the author to a certain extent. - he doesn't indicate, for example, when words only appear in the Scandinavian languages as some other Scandinavian etymological dictionaries do - difficult and tedious to find headwords (when viewing in Kindle format) - very expensive If you want words common to the Germanic languages, then Kluge "Etymologisches Wörterbuch der deutschen Sprache" is a better bet. For Nordic words, in my opinion Katlev "Politikens Etymologisk Ordbog" and especially Nielsen "Dansk Etymologisk Ordbog" are rather better. Jan de Vries "Altnordisches Etymologisches Wörterbuch" is a must-have. Bjorvand/Lindeman "Våre Arveord. Etymologisk Ordbok" is in some respects better than de Caprona because, while it has fewer headwords, it includes more detail and from memory it focuses on the Nordic and Germanic wordstock. De Caprona probably won't be one of my go-to reference books, I'm afraid.