In reply to cas smerdon:
VF Krabs can be steel or aluminium
they have a min gate open of 8kN
they have a larger gate opening.
The biggest difference however is they are tested over an edge, which normal biners are not. imagine a fall on a vf, your krabs are going to hit the horizontal bolt, causing a bending moment perpendicular to the normal direction. with via ferrata biners you are safe that this has been tested. normal wiregates and screwgates have not.
they are also autolocking.
so, using normal biners, you will die horribly
at the end of the day have you not thought that if manufacturers thought it was a good idea they would have already done it...
Ed