Last year, when I was first designing the shelter, I wanted to use only whole bricks everywhere- not even halves. I have since realized that sometimes, half bricks are useful to finish a pattern. I've read that Swedish architect Sigurd Lewerentz refused to use half bricks. As a result, the bonding pattern and mortar joints were much looser. So I guess it's a trade-off- more mortar, or different bricks?