I love it- it is elegant, classy, and timeless. Honestly, it is probably my favourite girls' name of all time. The only fault I can find with it is the popularity but if that isn't an issue in your area then I say go for it.
Emily Sigrid is adorable. I like the abruptness of
Sigrid next to the smooth sounding
Emily. I also think
Emily definitely needs a more unusual mn to balance out the popularity.
Emily Truth has been on my list for awhile which might strike your fancy as well :-)