Depends on the unit and the people in it at the time. Also, some units have a skewed mix of AGR vs. technicians. I've seen Guard units with many more AGRs than techs and others with just as small number of AGRs. It's not always an even split.
Not everyone already in a Guard unit is looking to be AGR. Many have already taken the technician route and prefer that. Others are traditional and have no plans to go full time. Last two guys in my unit to go AGR came straight off AD and have been there ever since.