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AlienTux How much RAM do you have on your machine? If you have 8GB or more, you really don't need SWAP unless you're doing activities like video editing. I have 16GB of RAM on both of my machines, don't have SWAP on either, and I've never ran into problems, even running VirtualBox.
If you have a SSD drive, I believe using SWAP is not good for it because of the constant reading and writing. I could be wrong...do your own research if you do have a SSD.
I can't answer your question about systemd-swap as this is the first time I've heard of it.