Ah, this is the perfect time to tell this story.
Late in the last century, I decided to pursue my boyhood love for leather work full time. So, with a hundred dollar bill in my pocket I set off to the local Tandy store. (Actual location shall remain un-named.)
I had an idea of what I wanted to do and what I'll need to do it. So I ask the lady there about the various stuff and she points it out to me.
(This is where is gets good!)
I tell her that I need a good knife for cutting leather, so she hands me this funny looking thing with a curvey metal top over a swivel and a very odd looking cutting edge. I says "This cuts leather?" To which she replied, "It's what the professionals use."
Mmmmm -kaaay. Not what I used when I was a kid, but oh well.
So, I took it home and laid out a piece of leather to begin cutting a long one inch wide strap with my "professional" leather cutting knife. Well, after about eight passes and no success, I put it to the stone for a better edge.
After thirteen more passes and a very bad cut, I threw the SWIVEL knife in a box, went to the hardware store, and bought me an UN-professional knife to cut my leather.
You can't make that kind of stuff up!