I've never seen Scholar in my games, or much of the knowledge skills in use. I suspect there's a general fear that knowledge checks are kind of useless in EotE. Knowledge checks seem difficult to directly apply to a situation, usually resulting in a boost die to aid the next skill checker with his test on any subject. (Like telling a hunter where to shoot, etc). I'm not claiming that scholars are useless, just that people in general approach the skillset of knowledge to be useless. I would like to be enlightened.
Do you have a scholar in your game? (someone with a primary focus on knowledge skills applies too) Are scholars useful in your game? Do scholars work better in more open ended games, or do they thrive in either railroad/open games? Do scholars feel like a difficult class to play?