Despite his concerns about people acting out because of the demand to sign their names in the Open Book, no incidents of any sort occurred.
The dignitaries that had shown up were all smart people. They had read up on the Larkinson Clan and its 'special technologies' and figured out that this was just part of the package.
Once they completed their part of the ritual, they weren't all that bothered by the faint new spiritual connections. The Solemn Guardian was a noble, single-minded design spirit that produced a positive effect on people's moods.
In fact, the Larkinsons had performed a careful selection in order to make sure that the different parties reacted well to the Solemn Guardian. The clansmen had to toss aside a lot of candidates whose personalities clashed with the duty-bound design spirit.