Question re CR phase implementations of [WebCryptoAPI]

Hello Ryan, Mark, et al.

Now that last call period has ended, it seems likely that CR 
implementation/test phase will begin soon. 

I'd like to get a sense of whether technologies based on this 
specification could be consumed by a particular product.
This would be governed by whether web browsers will support this, 
particularly for those web browsers that foresee deprecating support of 
the plugin API.  The particular product currently uses a plugin to provide 
digital signing capability to the JS layer.  An implementation of this 
specification seems to provide a promising alternative.

Does the WG have a sense of which members will be providing an 
implementation report to support CR exit?  If so, can you share it now?

Thanks,
John M. Boyer, Ph.D.
IBM Distinguished Engineer & IBM Master Inventor
@johnboyerphd | boyerj@ca.ibm.com