Thanks.
I did some research, and it looked like the EMS layouts are shipped with Sculptor actually only uses the ems for the width of the outerWrapper, which is why we have the additional Ems-based text layouts to download in the download center. But i can see the confusion when selecting an EMS layout in sculptor and pixels are being used. I will look into this issue more and see if that is something that needs to be fixed in the future.
Thanks for your response.