Merge replication with PDAs AND P2P replication between servers?

Question

We're currently building a setup to scan tickets at an event. We plan on having 2 servers at each entrance but can't have a local link between the two.

We have scanners (sqlCE) and half of them are subscribed equally to one of the two server with merge replication, and we thought about replicating the two servers together using peer-to-peer replication. Is this possible or we should use merge replication all the way?

Heres an ugly diagram: