Had a talk with my dealer about the warranty on the bike if a Diginow charger would be installed. He even has one bike with a SC on sale in the shop and he pressed Zero about the warranty during training sessions at Zero. He is quite upfront about his experiences with Zero and likes the SC himself, so I trust him to be fair here.
As I suspected Zero Netherlands will not serve warranty claims once the bike has been modified. The reason my dealer gave was exactly the one I was quoting here earlier (asked an open question, did not steer him in any direction): European law is different from the law in the US and allows the manufacturer to deny warranty after modifications have been made. Zero NL will do so after installation of the SC.
Which total crap, otherwise I would have ordered one tomorrow, especially now my stock charger seems to be giving up after six whole months lol. Luckily, that is going to be fixed under warranty, but still.