Yes, my TV drive is exactly doing what you describe - i.e the output signal is EITHER RGB Scart, Component or HDMI, and not any combination.
I could run the HDMI though a HDMI/DVI distributor, then run one output through a DVI/RGB converter of some kind, but that is going to be expensive and I was hoping there was another way.
As to Tivo, although the picture is of a lower standard (and is once channel record only), it has a better programme guide, better recording, search and scheduling tools, and a much better user interface at the moment. TV drive has a long way to go in development terms.
TV drive is wonderful
In picture terms it is so good that you can see the flaws in the source material being shown (e.g. news shot on DV tape).
More to the point however - I can store 300 hours of programming on my Tivo
... TV drive is 80 hours max.