Is it possible to import a trained ONNX model and convert it to use it with Learning Agents?

I have found an old post from Brendan Mulcahy explaining how to theoretically convert an ONNX model to the data assets required by Learning Agents. I wanted to ask if there has been any development on this. Is it possible to convert a model? Maybe via another plugin? Is there a blueprint friendly alternative? And is there a way to do the reverse, convert and export trained assets as an ONNX model?

My thanks in advance.