Steep wall jugs define Set #3 in this series. The holds are all double incut with the tongues of the holds in the 1" thick range. That means comfort without a lot of extra material in the design.
On a 45-degree wall, you can expect to get four fingers wide, and two full finger pads deep into the incut. They feel V2 at the most.
On roof sections, the incut is horizontal to the ground so that you can hang on them. The width offers a tight four fingers to wide four fingers, and the depth in the one-and-a-half finger pads range. I found that I used my main three fingers and thumb on three of them. Dropping my pinky was more comfortable for me. I have a small man's/large women's sized hand. Expect a V4-feeling grip when using these on roofs.
You may also be interested in the following sets. Set #1 is the least incut, with Set #3 being the most incut.