So far I have not been using Reality Checks at all, as they do not really work for me. As I have been only WILDing so far, I managed without RCs. Now the other day during my WILD practice I did have a dream:

I went along a road and started to feel woozy, I thought, wow, just feels like when I am ready to get into a LD. So I did check if things did feel "real" and thought, "yep, all real, I am awake". But there was still some doubt and all of a sudden I thought to try and close my eyes. When I am in a LD, when I close my eyes I loose vision for a bit, until I manage to reengage my vision. So I lost vision in my dream and became fully lucid.

Now I have a RC that does work for me, which is just to close and reopen my eyes. That is also very easy to do during the day