It does look cool, but also pricey and a lot of work (new seals, polishing, etc.) Not sure what it would buy over just a set of new progressive fork springs, other than a little more adjustability (much of which can be handled by different weight fork oils anyway).
These look like they would get you most if not all of the way there for a lot less work and save you $500 to put towards the rear shocks:
'13 CB:
http://japan.webike.net/products/20285971.html
'14 Deluxe:
http://japan.webike.net/products/21962839.html
Still, it is always interesting to see new options. Glad to see people are still making some for us.