Ignoring for the moment whether or not you routinely carry trekking poles, the Notch has the advantage in that it can still be set up with sticks or limbs even if you loose or break a trekking (or one of the optional tent) pole. Arch tents like the Moment, Rainbow, and Double Rainbow can not be set up without that pole, and there's no room in the pole sleeve for a repair sleeve.
That said, I've had a Double Rainbow out in some pretty wild weather ever since it first came out in '96. I've never had a pole problem with it. I'd have to fall on the tent to break the arc pole; possible but not likely. Rain has never penetrated the canopy material. I use a Tyvek sheet under the tent to keep from forcing water through the floor when the ground is wet, but a few extra minutes of careful site selection makes that really unnecessary....but I do it anyway. It gives me a clean, dry place to fold the tent and repack my pack in the morning.