Mont Blanc biz card holders are quite popular. They come in black soft leather.
I'm looking more for a metal-made card holder. Any idea where I can buy one? I went to Sogo in CWB, but they only have, well, designs for girls I'm looking more for an easy no-frills design like this:
Mens designer fashion stores like Mont Blanc, Zegna, Dunhill, Ferragamo. Also some jewellry stores may sell them.