My thought about the cable card was to use it in lieu of the STB, not in addition to.
Does the consumer version have more than one set of component video inputs? I would need two at least (TiVo and DVD), and it appears that the commercial version has just one, so I would need to purchase the additional card. If the STB has DVI or HDMI (not sure if they do), then it would be good to also have that input and be able to take a direct feed from the STB for best quality when I can watch live (sans TiVo).
Does the consumer version have more than one set of component video inputs? I would need two at least (TiVo and DVD), and it appears that the commercial version has just one, so I would need to purchase the additional card. If the STB has DVI or HDMI (not sure if they do), then it would be good to also have that input and be able to take a direct feed from the STB for best quality when I can watch live (sans TiVo).