In tests only, you will have parallel connections at launch though. We do’t trust individual nodes so you will confirm via several (prb 3) routes. So it will mean more traffic, but probably necessary. Also 3 means we can cycle as these churn and clients should not be affected. Unless you connect through your own local vault 
So room for a vault to be integrated into launcher for ease and safety.
it has connections to it’s group (plus normal kad routing table entries). Your message are routed to wherever you want (your ClientManagers for Pu and DM for Get/Post/Delete).
This is probably answered in the first question (I think), shout if not.