Yeah, it's pretty alright. Shame you can't use it without syncing to Wii Fit U, and I'm curious how many days it's going to let me go without resyncing, but so far so good.
I've taken readings before and after bumpy car rides and it's close enough to zero gain that you're not having to do mental gymnastics to figure your 'true distance'. The time function is pretty funny and an accurate reading of when I'm glued to the desk. Altimeter is a goofy feature, but why not.