I've experienced difficulties connecting to Tor from eduroam. Does eduroam block tor? Would this be simply an artifact of the institution through which I tried to use eduroam?
The problem is likely caused by the institution you are connecting to, and not eduroam.
I have never used eduroam (nor heard of it before this post), but after viewing their documentation it appears they only integrate with other institutions for RADIUS authentication (https://www.eduroam.us/node/10). Meaning they really only care about figuring out if you belong on their network or not.
After you are authenticated your traffic is controlled by the institution you are at.