Not gonna import one myself... imported games is one thing, they don't bug me... but I don't want any possible incompatibility issues down the road, however unlikely they may be - by using a foreign system with domestic US games.
It's gonna suck, very much, waiting during that time between the JPN release and the US release... but that's what all our glorious backlogs are for, I like to think =) And hell, I don't even have my DS any more... so it's all the harder for me to wait. Be glad, those of you that have DS and can play your games =)
I do hope Navy Blue will be availble domestically... very very much.