Questions for downloading large datasets


I am new to obspy. I have a question about the mass downloader. I wonder if I can only download the waveform and station information by using the mass downloader? Will it be possible for me to download the metadata and combine them later? I read through the documentation but cannot find how. If not, what would be a better way to download the waveform, metadata and station information at the same time for a large data set?