joshhill96: I have seen the Skybox in action and HD channels are available in HD even if you don't have the HD ticket. you need to subscribe to the channels though.
The above view is my personal opinion/view and not from Dish TV Technologies
I have seen this comment before, in regards to a HTPC build with a card reader - there was no need for the HD ticket but the Sky HD channels where still viewable in HD. Apparently (and that thread made a mention to it) the HD ticket activates something in the MySky decoders, it does NOT change the stream coming from the satellite (which makes sense). But of course Sky is all about $$$ so I doubt will change anything about that.