What I consider fancy would be one with tooled desigs or elaborate stitching and edging on the flap. Also flaps cutouts backed with colored velvet or other similar material.
I confess that I find those types attractive, however, my personal pouch is a "D" shaped, 6
1/2 x 8" made from oil-tanned deerskin. Strap is partly oil-tan deer, but made to appear as if it was repaired at some point with a 18 inch strip of heavy linen torn from my hunting shirt, folded double and crudely stitched.
Adjustment is with a hand forged iron buckle. Like its owner, the bag looks to have spent seasons years in the woods, sleeping on the ground.