implicit SeqSchema for anything with a WireFormat

I added an implicit SeqSchema for anything that has a WireFormat.  It was a bit of a hassle to persist anything as a sequence file that wasn't one of the standard types.  Also,  I wanted to use it for checkpointing and writing the avro schema for each checkpoint is a bit prohibitive - of course, this may change when/if the plugin is updated for scala 2.10.

Is there a better way to support this?