This isn't really a football related subject, but I thought it was interesting. Not that I am aware that the Scottish ever took to the Union Jack in a huge way, but here is what Wikipedia says about it. Ya, I know, Wikipedia acan at times be unreliable, but not always. Here it is:
Other proposed versions
The Union Flag as commonly used in Scotland until 1707
Other proposed versions.Various other designs for a common flag were drawn up following the union of the two Crowns in 1603, but were rarely, if ever, used [4]. The two shown here include St George's cross with St Andrew's cross in the canton, and another version where the two crosses are side-by-side. Also, some Scots were upset that the Scottish flag was underneath the English flag in the version finally adopted, and preferred a version where the Scottish cross was on top (the English flag was placed between the cross of St Andrew and its background).
Many Welsh people have proposed modifying the Union Flag to include either the Red Dragon or the black and gold colours of the flag of Saint David, arguing that the current design fails to represent their country.
There you have it Scottish brothers, St. Andrew's Cross on top of St. George's cross, not the other way around as it officially is today.