Thanks this is all very helpful and helps me put it into perspective. Sounds like a 341 clone might be the better option.
The thickest material I might sew (but not regularly) would be 2 layers of 12oz veg tan, but the majority of my projects are bags, wallets, and belts. Wallets I'll probably continue to hand sew but I need something to help me cut down on the production time of bags and belts. From my research, it seems like a 341 type is what is recommended for the type of work I do.