I got
suckered into buying Tandy's "Speedy Stitcher" or what they now call their "Sewing Awl kit" back around 1972 when I was first began leather work.
https://tandyleather.com/products/sewing-awl-kit?_pos=17&_sid=96a84d67f&_ss=r
What a huge waste of time and money!!!!
As soon as one single loop stitch wears or breaks, the whole line of stitches UNRAVELS on you. No serious leather worker uses this device for that reason. Back in the 1970's, I got a LOT of practice repair hand stitching leather holster belts of Law Enforcement Officers that were machine sewn the same way.
"Saddle Stitching" is not only the correct way for the period of this forum, but it is not difficult to learn. Further, what makes this stitching really stand out is you can cut every fourth or fifth stitch and it will still hold the leather together. Heck, I had no one to teach me how to do it in the early 1970's and pretty much had to figure it out on my own, so it can't be THAT hard. GRIN! However, today it is very easy to learn as there are many videos on learning it on YouTube.
Our dear departed forum member, Chuck Burrows aka La Bonte on this forum, was a REAL professional leather worker who served an apprenticeship to do it. He suggested video's by Neil Armitage as excellent ways to learn. Here is a great one to learn hand stitching:
My advice, don't waste your money on that (Ahem) device and learn to do it the better way by hand.
Gus