I briefly looked over it today, and I don't care too much for the conversations themselves, but found the "useful phrases" interesting.. for example, Traupman plugs in the appropriate synonyms for idiomatic expressions (e.g., distinguishing between cogito/puto/censeo for certain idioms), while generating a rather useful list.
Question -- is it Classical, or does it employ Latin from all periods? Does it distinguish between poetic/common, or does it mix them up? I like to keep these things separate, but many texts are too indiscriminate.
P.S. - I've just noticed "D?oderlein's Handbook of Latin synonymes." on Amazon.. has anyone used it yet? It looks fruitful even to go through it page by page, noting proper idiomatic usage for some of the more common words.