Hi, Y6 DS's school is a very cliquey school-gate situation for me (it's known by many others for being like this). The kind where if you aren't prepared to visibly suck up to three or four individuals, you aren't really included in anything. Even the children's birthday parties in this school year seem to be small and select, rather than inviting a class or large group of friends (I've had another DC go through this school and their year was nothing like this).
However, DS gets on with all the children in his class and he has a BD party coming up. I don't want to limit his attendees based on my refusal to engage in cliques, so should I email all of the class parents and risk a few people dropping out because I'm not 'sociable' or be a little more sneaky and send paper invites to be handed out to the class FOLLOWED by an email?! 
AIBU? Are paper invites at this age naff and does it look like blatant subterfuge to let their DCs know about the party first? We don't have a lot of birthday parties and this is going to be a really lovely one - I don't want it to be spoilt by school gate-ry.