Visually there's no difference one can only feel it in hand only by weight difference.
Personally I am disappointed by the metal quality. One can barely differentiate between plastic and metal if we ignore the weight difference.
One card metal quality is much better.
Actually your RM is correct.
Officially metal DC is offered on invite only basis.
So they ask high IP.
My RM was actually unaware of that the metal DC even exists. Also I made it clear that the sole purpose of this account opening was metal DC. So it became easier for me.😅
Still try convincing...
Push you RM, only he can do on urgent basis.
I opened a new account and got metal dc all within a week.
Just ask your RM to raise a request or else threaten him that you'll close the account.