[c-nsp] Cisco 3750s - Stackwise Plus

[Sean Granger]

The product listing on this page ( http://www.cisco.com/en/US/products/hw/switches/ps5023/prod_models_comparison.html ) shows WS-C3750G-12S as being StackWise+ compatible. This is an older product and even the literature on the other 3750v2s just references the original StackWise technology.
 
I like the 12S for fiber aggregation in these stacks but maintaining a 64Gb interconnect would be nice between the copper access layer switches.
Does anyone have this sort of combo in a stack with products that clearly support StackWise Plus (3750E, 3750X) and can confirm/deny compatibility?
 
Thx!