Feedback on Workfront and Frame.io integration login differences

We have just gotten access to the Adobe storage and included (free) frame.io integration. 

We’re not happy about the need for users to create and login to a frame.io account to see proofs for review.

I think ideally, a user with a WF account should not be asked to create a separate account and login, it should just use their WF credentials.

For our guest approvers in WF, I could be wrong, but it seems that they are now being asked to sign in/ create a frame.io account and receiving an email to set up a separate account in Workflow? 

I’m curious what others are seeing?

I’m especially curious about what people are seeing who have a frame.io license on the same enterprise as Workfront. is it the same, do you not get asked to log into frame? etc etc.