Sorry to add to the hideousness, but I just came across the lower-right sporran on Ebay today, the very Poster Child of the Kilt Hire movement. (Pipe Bands ain't in it, because the pipers I've known over the years wouldn't be caught dead in such a thing, and I don't think any serious competition band would wear it.)

But it's even more clear that the makers just grabbed whatever bits they had to hand and stuck them on whatever sporran bodies they were already making.

The original style (top left) was called JMP by WE Scott and L&M (Canada) but I have no idea what those letters meant.

Grab the ball & chain tassels off an Evening sporran, and the big thistle badge off the basic horsehair sporran, and Bob's your Uncle.