The probs with those small Faders are
1) weaker than a regular biner. Check again on that 1700 kg, the ones I saw were rated to 1200 did someone file off the bottom of the 2 to make it into a 7.
Anyways, 1700 Kg = 17 kN not 19.
The other problem is thin radius. Take a big fall thru one of those biners and prepare for serious rope damage.