RooCase has 2 models of cover. I bought the lighter one that was supposed to be 6 oz. While it doesn't add much weight and bulk, it is noticeable.

It is a nice fitting cover, seems well made and proper openings for all the ports.
However on 3 sides the cover has what I call flanges - not a smooth rounded form fitting way to close in the sides.
While I have neither the base nor the keyboard portfolio, the flanges might prevent proper usage without removing the TPT from the case.

I'll let you know next month when they arrive.
The only other thing is that it would have been nice to have magnetic closure on the cover.
Not for an Apple affect but so it the case is dropped the cover will remain closed and offering a little more protection to the face of the tablet.

thanks for the evaluation..