Here's what I think you're saying: A feature of OpenID is that, unlike passport, there is more than one ID provider. With Clickpass, although you can use a generic OpenID the normal way, it works best if you have a Clickpass account.
That's a pretty good description Alex. We've tried to minimise the feature set and whilst we've made sure that people can use their own OpenID if they want to we figure most users won't. If it turns out that they do we'll switch to making it an automatic feature.
Here's what I think you're saying: A feature of OpenID is that, unlike passport, there is more than one ID provider. With Clickpass, although you can use a generic OpenID the normal way, it works best if you have a Clickpass account.