I looked through it last night, and it seems quite useful. It's about 2/3 Japanese-inspired recipes and 1/3 Western-style. The author lives in Switzerland, and so does not use a lot of ingredients that can't be got at anything but large Asian stores. The recipes are mostly 1 serving in size, as suitable for a single bento. It was developed out of the Just Bento blog so you can poke around there and see if her style sounds appealing.
It is not a cutesy or kid-oriented bento book. You can make the recipes for kids, but if you want to put little faces on the food, you'll have to find another guide. :)
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