I have the same Simplicity pattern and thought to use it as the basic shape for my Kilt Cut Sport Coat that is shown in my Freedom Kilts section.

I had the assistance of a VERY good seamstress who has a ton of experience with mens jackets. She says she would have had to completely re-shape the pattern pieces, change the type of interfacing, add internal shaping such as shoulder pads, and re-design the sleeve cuff from scratch.
Basically, the pattern would be ok if you already know how a jacket is put together and what a jacket needs to look right, but you will not get this information from the pattern alone. It would be like trying to make a well fitting kilt from a pattern.

The kilt pattern that is included in the package is good tinder for starting a fire, or for packing small, breakable items when you move.

If you have built two or three jackets already, the simplicity pattern will be a good one to use for an argyle. Please remember though that mens jackets have a lot of hand sewing in them. The liner is completely hand sewn, as are the sleeve attachments. No commercial pattern covers that. And the changes to the interfacing and padding all came from experience, not the pattern.

I tried to create the jacket alone using the simplicity pattern and my attempt resulted in dismal failure. The thing looked like a gunny sack.

It is my opinion that a well fitting and looking argyle jacket is in some ways harder to accomplish than a hand-sewn kilt.