I prefer a lightweight keyring. The Fenix 1xAAA lights are much more capable than a Photon Freedom, but the price is much more weight. We have different priorities.
If I know I'll need a light I skip the AAA lights and go to a 1 or 2 AA light, Fenix or Foursevens. If I need to pocket carry a light, the Fenix E12 and the Foursevens Mini MA aren't much bigger than the AA battery they use for power.