After Sir Wolf helped me reinforce the points on the pourpoint, it's been great. Before that, I was ripping out the points just by test-wearing the armor around the house.
The arming cotte works great as well, but I also needed to add new points since the default ones weren't in ideal locations for my armor (not their fault). The down-side to the cotte is that it's a softer linen. Anywhere the armor rubs, it will wear through pretty quickly, and you may be sewing patches onto it. I've been using thin leather to sew over the holes, and the leather takes the friction a lot better. So it's not completely maintenance free. But it certainly fits and moves well, and will hold up your armor. After attaching my voiders, I've discovered I can't really wash it. The voiders are also technically too big (I didn't cut them down enough), so it restricts my mobility a little. I need to rethink this a bit.