I've used my first Boardsmith for some time, I have not gone light on it but always pampered it between the abuse (i.e. used Dave's mineral oil/beeswax stuff). It has some dark marks from hot utensils that have been put on it (small kitchen is a partial excuse) but also some deeper scars from the mistake of using a oroshigane on it. I now use a small poly for the oroshigane.
Despite this the board works and looks fantastic. I must buy at least one more so all my kids can inherit one.