Yeah, I don't think EAP-TLS with client certs would work out well for Eduroam applications. You have a very large number of end users, they're only barely under your authority (students, not staff) and they have a wide variety of devices, also not under your control.
But even in Enterprise corporate settings I did not ever see this though I'm sure some people do it. It sounds like potentially a good idea, of course it can have excellent security properties, however one of the major downside IMHO is that people wind up with the weakest link being a poorly secured SCEP endpoint. Bad guys could never hope to break the encryption needed to forge credentials, but they could trivially tail-gate a call center worker and get real credentials which work fine, so, who cares.
Maybe that's actually enough. Threat models where adversaries are willing to physically travel to your location (or activate a local asset) might be out of your league anyway. But it feels to me as if that's the wrong way to look at it.
But even in Enterprise corporate settings I did not ever see this though I'm sure some people do it. It sounds like potentially a good idea, of course it can have excellent security properties, however one of the major downside IMHO is that people wind up with the weakest link being a poorly secured SCEP endpoint. Bad guys could never hope to break the encryption needed to forge credentials, but they could trivially tail-gate a call center worker and get real credentials which work fine, so, who cares.
Maybe that's actually enough. Threat models where adversaries are willing to physically travel to your location (or activate a local asset) might be out of your league anyway. But it feels to me as if that's the wrong way to look at it.