I would get one 2x32 kit somewhere you can return it (or even 1x32 if you are worried) and try it out, sometimes it does work but sometimes it won’t POST. Like the other person said, it might work but there really isn’t a way to know for sure other than that. I have run into situations with systems like that where that was just the largest available at release date for them to test and validate and larger DIMMs work fine so it’s probably worth testing in my opinion.
I am curious myself, let me know if you do test it, those look like cool machines for small clusters.