The bit COULD be severe depending on the adjustment of the cub strap or chain and the harshness of the hands. I started the horse with the curb strap fairly loose.
Then I just rode the horse. By the time I was doing this I had taught the horse to move on an indirect rein and had gradually turned that into a nice neck rein.
As a couple of weeks went along I just shortened the curb straps to the tightness I felt optimal. At some point I barely touched the bit (a little bump once in awhile if I needed it).. but just the very lightest of contact.
And that was it.. we were working in that bit.
I have not had a horse in a long time but I have that bit. Never had a horse object to it and it fit a LOT of horses. Of course I had nice heavy oiled latigo reins and a very light hand.
I have never seen another bit like it and I don't even recall where I got it. This is similar but mine has a stainless mouth piece.