[Elecraft] K2 RF Speech Processor?

[K4tmc at aol.com]

I asked this question about 1.5 years ago and still have not heard from 
anyone with real experience...

Has anyone tried any of the DF4ZS RF speech processors 
(http://jwm.de/afu/index0.htm) with a K2 yet? 

For those who think the SSB "punch" is a little weak, maybe this would help.  
In fact, maybe this would be a good Mini-Module Kit.

73,
Henry - K4TMC
K2/100's 3137 and 4796