Climbed up to both summits. The north summit has a few options to climb once on the large summit area/plateau, but I found the easiest one being to start up the right side of the south side headed up the chimney, but instead of transitioning left onto the unprotected slab, I climbed right and around a bulge and onto a long narrow ledge on the east side. I then climbed up on the northeast edge of the formation the final 15-20 feet or so to the top. Protectable 5.4 I called it. The south summit is well described by Liba here and was a few moves of 4th class or maybe 5.0. We started at the Tower Arch trailhead on the east side of the formation, this is accessible by 2WD cars and makes for a very short approach.
This was another fun visit to Arches with doing something new and not crowded. My partner forgot his climbing gear, so we did it in approach shoes, wrapped ropes around our waist and did a hip belay.