New Sigma 85mm f/1.4 vs Sony Zeiss 85mm f/1.4

Sigma recently introduced a new 85mm f/1.4 HSM lens for Sony. The question now is: How does the Sigma compare with the $450 more expensive Sony Zeiss 85mm f/1.4? You can find the very first comparison at Dpreview forum here and here. So what do you think?

You can preorder the Sigma lens at Amazon, B&H, Adorama, J&R, eBay
Check the price and availability of the Sony/Zeiss 85mm f/1.4 at Amazon, B&H, Adorama, J&R, eBay