Can I re-use object instances to avoid allocations with protobuf-net?

Context: this is based on a question that was asked and then deleted before I could answer it - but I think it is a good question, so I've tidied it, rephrased it, and re-posted it.

In a high-throughput scenario using protobuf-net, where lots of allocations are a problem (in particular for GC), is it possible to re-use objects? For example by adding a Clear() method?

[ProtoContract]
public class MyDTO
{
    [ProtoMember(1)]
    public int Foo { get; set; }
    [ProtoMember(2)]
    public string Bar { get; set; }
    [ProtoMember(3, DataFormat = DataFormat.Group)]
    public List<int> Values { get { return values; } }
    private readonly List<int> values = new List<int>();

    public void Clear()
    {
        values.Clear();
        Foo = 0;
        Bar = null;
    }
}