Rob Dillon doesn’t fit neatly into the archetypal confines of the glass jars and test tubes that clutter his old-timey science lab at the College of Charleston. Premier snail researcher. First Amendment buff. Devout Christian. Scoutmaster. Former constituent school board member. Choir guy. Genetics professor. NASCAR fan.Tall and lanky, with a splash of mad scientist, Dillon may be best known locally for organizing Darwin Week, which just concluded its 13th run in Charleston, and for his devotion to keeping his revered faith out of science classrooms.