Hello Walter,
I have discussed the matter with Kari (not strictly speaking discussed as this was Email exchanges).
As a matter of fact the layout of the caliber 25 is very similar to the Valjoux 13'' as Kari finds this basis technically interesting.
But the a Caliber 25 is not a re-worked Valjoux : the caliber 25 components are produced by Kari and his team as per his own quality criteria and then assembled in Môtiers.
The "in-house" input of Kari is not mainly on the design but on the making.
This is very consistent with his philosophy that is to use the legacy of the watchmakers of the XXth century (or even older) and to go further (if possible) in the watchmaking art.
One can find the same with Vianney Halter (his Antiqua, Classic and Contemporaine were developed on a layout similar to the one of the Lemania 8810 while the Trio is inspired by the Peseux 7001). Even the Simplicity by Master Dufour is inspired by an existing caliber (Lecoultre, if I am correct).
To be frank, I find more interesting a top quality making with a very classical technical design than an average (or worse) making with a freak design.
As I said during my conference in Belles Montres Show in Paris on last november : "Designing and making a watch that looks like a kite and saying "I did it myself" is not enough to be an Independent".
IMHO, a real (or valuable) Independent shall gather 2 criteria :
- mastering his art which is MAKING watches
- basing his creation on strong (even if arguable) points of view about the related aspect of horology.
IMHO, Kari gathers the above.
Best regards
Philippe M