Projector just has hdmi input.
As to your second point, I've heard that as well. We have TWC in the northeast, and there's word they'll be phasing it out next year. Worse yet, the transition will a box (digital tuning adapter) to get any channels that seemingly can only be rented through them and not available for purchase from third party providers.
That said, when I thought a box could be had for ~$30 like the qam box I ended up with, it was worth it to pull in all channels. If you're aware of a similar box that exists that also handles ntsc, I'd ddefinitely be interested to hear. Though I suppose since cable co's are phasing this out, there's not much of a demand for them.