There are plenty of counter measures and useful strategies against eclipse. Just because they don't show on radar doesn't make them invisible to be seen to use any weapon other than guided on them. In showdown, it all comes down to luck if you select the right counter setup when your opponent has selected eclipse.

I like my Gemini, but multi-layer shields make it almost useless. Still, I will continue to run it because it's fun when it works. Not a snob who think revoker and storm rack are the only 2 weapons to play.