Publish PointCloud descriptors

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Hi,

I want to publish my calculated point cloud descriptors like so

pub_descriptors = nh.advertise<pcl::PointCloud<pcl::SHOT352>::Ptr> ("descriptors", 1);

but ROS won't let me because it cannot serialize it throwing a really long error. What is the prettiest way of solving this problem? What is the fastest one? In the end I do not always want to publish SHOT352 descriptors but also try FPFH and some others. Do I need to create a new message type for any descriptor I want to try out? Is there a way to have that work similar to image_transport where I can subscribe to all available compressions?

Kai