Techmarine and Servitors

I have finished another Elite option for my Knights of Eden Space Marine army. This is my Techmarine and Servitor squad. In all my years of playing 40K I have never really used a Techmarine. I used to take one in my old third edition Dark Angels because he was a close combat monster but I never took one because of the vehicle repair rules. I am still not sure he is worth it considering most games I have played are over after 5 turns. There just does not seem to be enough time to use his special rules.