User Sync with copying avatars

Hi,

1. Do you know if User Sync can copy over the standard gravatar from Master to Slaves?
2. Is there an avatar plugin that works well with User Sync? What I mean is that the user can upload their avatar on the Master and then User Sync can synced with the Slaves and the avatar appear on the slaves too (assuming the same avatar upload functionality exists on Master and Slave)?

Thanks.