You can create password protected areas in a K2...
Plus you can create as many additional pages as you would like as you dedcide to add funcitionality.
A priomary emaple would be if you wanted to retro in a Grafik Eye or Spacer System dimmers, you could control them from the K2, and make a macro that slightly dims the lights as you select a video feed, and kicks them back up when you switch to an input with a static display of the churches name/logo etc. while the video feed is not live and people are entering or leaving.
I think the power of the K2 makes it well worth the difference of a Xantech Smart Pad based system.