Backup NTFS partition with ‘dd’? If I put an entire Windows 7 (bootcamp) partition using dd into a single archive, will a restore still be bootable?

I just received a new machine with both OSes pre-installed, and I want to get a “pristine” backup before booting Windows.

I can’t use TDM because I have no other machine to read it with.

Related but not duplicate:
How do I copy an NTFS partition to a writable disk image? 
Backing up a Boot Camp partition
I use ntfsclone from system rescue CD. It has allowed me to resize my partitions many times. Then I use the installer CD to run fixboot to rebuild the BCD. Works very well across many hard drives