Rode up our local big hill with my wife, which she had never done before. She reports that it was easier than she expected. I paced us at about 1.4 w/kg which was mostly conversation pace except when it got really steep.
About 2 dozen weekend warriors passed us. It's funny how almost every single one would hammer past us (I could hear them coming so I knew they were not going nearly that hard before overtaking us) with a faux-sympathetic comment to my wife about how hard the hill was. Even better was overtaking a few of them later, tortoise and hare style, after they had completely blown up.