Thanks for posting this. I've been leaning really hard toward doing my walls the same way -- "centered on the tile".  Every example I see posted makes me more certain it's the right choice for me.

Molds: 40, 50, 52, 56, 60, 61, 65, 70, 71, 72, 75, 77, 85, 100, 164, 200, 201, 203, 220, 240, 250, 260, 281, 282, 290, 701