I went to double check why I seal first.
This is a link to Miracle's instructions.
http://www.miraclesealants.com/downl...ured_stone.pdf
Their enhancer can be used alone but if the textured stone will be exposed to oils or grease they recommend sealing first. But in other situations the enhancer alone is ok and will provide a deeper enhancement, or you can even seal on top of the enhancer. I guess it can't hurt the stone and it won't hurt Miracle if you double up on their product.
I sealed first then used the enhancer when installing some flamed granite one on job and some sanblasted granite on another in some apartment building lobbies here in the NYC. Considering what could get tracked in I don't think extra protection can hurt. The jobs still look good a few years later after heavy use.
But I'm sure just enhancer would be fine for a residential bathroom.