Scrot is now attached as a depedency as needed on the mythTV player so future installations will not need a manual installation (you do not have the game player installed most likely, where scrot IS a depedency, so it wasn't installed for you already)
MythTV's guide is touchable to a point, they made a few bugs however, and so when a popup appears (when asking a question etc.), the touches go to the items below it.
I know this works, because I use it every day. The buttons below also work.
And yes, until I port more of mythTV's UI to orbiter, the guide shows up on both orbiter and the TV.