I have a binding attachment that's very similar to the one pictured in the post above. I use it on my "home" Bernina.
I rarely use it... but...
... it's better than putting binding on by hand. And better than all the pinning you'd have to do.
... there IS a learning curve.
... you can't go fast. For someone who's used to working on an industrial machine, that's a bit maddening. Still... if I tried to go faster I don't think I'd be able to control it.
What I've used it for, was potholders and apron edgings. I don't think you could use it on anything thick, like fat batting.