Basically the threading is the same. Not much different. And I tell you, the difference between small domestic machine & Industrial machine is the speed & space.
Speed : Ok, I tried to switch to domestic machine right after using the industrial machine and I was like BLahhhhh! Is it this slow all the time I was using it? I cant believe myself :p
Space : All this while, I put my serger & domestic machine on the Ikea table. So, when I move to the Industrial machine, I am happy that I can open my arms wide open when sewing and no need to push some of my things like the threads box, serger aside because the space of the industrial machine.
And one bad thing is, its a quite hassle to 'debug' the industrial machine once it is stuck but I havent come to that situation yet because I always make sure, everytime after sewing, I left all things in proper condition. The sifoo who taught me using the machine said, I have to make sure, I pull the bobbin threads out when Im done because leaving the threads below can make it stuck.
p/s - Tell me if you are ok with small size of the font. I somehow found it nice..