If kilts were like cars, I might make the following comparisons

Utilitykilts -> SUVs
Stillwater kilts -> Honda Civics
Handsewn traditionals -> BMW

Different manufacturers, quality, and functions, but all the same basic item although tough to compare on a point by point basis.

Quote Originally Posted by Yaish
They are sewn down at the hips (mine is an '06 model) but they are not sewn in the rest of the way, its just ironed fabric.
... just as are traditional wool kilts.

... That differs from a UK in that their pleat edges are sewn all the way down, both on the inner and outer edges of each pleat.
... Because if they weren't, you'd end up with a garment looking rather similar to gathered skirt after the first wash.