Saddle Stitches

[cggeg2001]

I have purchased an H&M City Sofa and Loveseat. It has been on hold due to terminology issues of which H&M refuses to speak to me about. I have tried on multiple occasions to speak with the dealership but they have not been able to answer my questions because they do not appear to understand what these stitches are. Nonetheless, the owner is placing my order to be done the way he thinks is correct without explaining to me that I am getting just what I am asking for.
There is a chair, #5736-1, that has what I believe to be a SINGLE TOP STITCH. Then there is another stitch which, from my understanding, is called a DOUBLE TOP STITCH, which H&M calls SADDLE STITCH. If I am misunderstanding this, please let me know, but a SINGLE TOP STITCH is done on a quality leather wallet in the "technique" of a SADDLE STITCH, but it is still a SINGLE ROW OF HOLES with 2 stitches in each row. If it was NOT a SADDLE STITCH then there would be only ONE thread per hole.



So, in a SADDLE STITCH technique, there are TWO ROWS of STITCHING in each SINGLE ROW of holes.

Here are my questions:

1) In the case of the SINGLE TOP STITCH in the chair (#5736-1), is that TOP STITCH done with ONE thread or TWO?

2) Continuing from question one, and assuming that there are TWO threads, is it going with TWO NEEDLES, one thread in the hole followed by the other thread in that SAME HOLE as is it done in a TRUE SADDLE STITCH technique?

3) I am told that if you have a SINGLE TOP STITCH, without SADDLE STITCH technique, the stitch itself is NOT as secure, because it is not enough of a "lock". Plus, you have that bump there which wears out faster (but still not as fast as a welt on some pieces). With the DOUBLE TOP STITCH SADDLE STITCH, the wear is less because it is flat; but, what is the negative of the DOUBLE TOP STITCH SADDLE STITCH? IS THE LEATHER WEAKENED at all by so many holes? Or is it same number of holes in H&M’s Saddle Stitch and their Single Top Stitch?

4) Which, in your opinion, is the most durable stitch? Also, considering durability 1st and then looks 2nd which stitch would you put on the City Sofa not including the welt? I would like the most durable stitch on the City Sofa. The top stitch looked okay but I thought would wear more at the bump, but be a stronger stitch but ONLY if it’s also done saddle stitch technique. If it’s not even saddle stitch then it’s a single thread so maybe I should go with that double top stitch which is saddle stitched I guess? I’m really not sure why they named the stitches this way or maybe I am the only one it confuses?