Yup, and, ironically, my last 10Gig deployment (2009) was 100% copper from the server to the switches - but it was a pain in the butt trying to get it to work, and I don't think I would ever try doing anything but fiber between my network elements for 10 Gig.
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They still use copper on 10gbit in some places for rack-local connections through both cat6 and passive sfp+ cables
Yup, and, ironically, my last 10Gig deployment (2009) was 100% copper from the server to the switches - but it was a pain in the butt trying to get it to work, and I don't think I would ever try doing anything but fiber between my network elements for 10 Gig.