I generally OC in the woods, then its dependant on what im doing and what might be around. Usually a .357 mag (Ruger Vaquero or GP100), .45 (Glock 21, Kimber Warrior or Ruger SR1911 CMD), once I get more rounds in it my RIA Tactical 10mm will be my primary woods gun.
For regular public? To and from work Ill occasionally not wear my jacket and essencially OC my EDC (CZ P-07 or Glock 19 mostly).
Were I to have a BBQ to go to wherein I wanted a BBQ gun, Id pick my Vaquero in .357, and my wife could match with hers... she'd love that. Id need some fancy new grips and leather though.