I imported the four JP sets even though they are not English Friendly, mainly because Violet Evergarden is my favorite anime of all time now. The Japanese box sets are pretty awesome inside when you open them up. Volume 4 also includes the Extra Episode 14. I'm glad I got the JP sets; they will add so much to whatever boring packaging for the series we ever get here in the US. Until the series is released in English sub/dub, I just have some multi-language fansubs burned out to a DVD, which plays great through my Blu-ray player.
Below are some pics of the Volume 1 set. Outside is an o-card slipcover with cutout window. The cardboard Japan uses for slips is more rigid and crisp that US slips, and the hinged box inside has a really nice-feeling matte finish: