It's because of your photos that a lot of us order the GGTS.. they've very seductive.
Anyway, as I said I forgot that the GGTS could take a single CR2. Having said that, if there was a little note somewhere stating that the photo shown was demonstrating the single CR2 configuration, that would probably help clear up any confusion. Otherwise, there's no way any of us would know that there would be a gap when using a short battery such as the RCR123A... unless of course one were to see this
thread, or another that showed photo'd examples of what each configuration looks like.