IAD - Skip Shadow's Seduction?

Hello! I'm up to Shadow's Seduction in the IAD series and I just don't care about 1. Caspion and 2. the Dacians. My interest as far as Dacians begins and ends with what we saw in Lothaire.

Will I miss anything vital if I skip Shadow's Seduction? I know they're all technically able to be read as standalones, but there's plot threads that connect in later books, I've noticed.