They are ok machines for sewing canvas & etc and I have sold them to inmates in prisons(do to space limitations) but to be honest they do not work that great because you can't use any thread bigger than # 92,some times they have problems with various parts breaking,I don't know if they are pushing them to the limits or what but they tell they just sew wallets & belts.
It would be great if they held up better since there portable, but they are really just a modified household type of machine.
I feel you would be money ahead to get an Industrial Machine and as long as you got the correct machine you will be able to spend more time sewing & get a better looking job done to.
Bob