Does anyone carry a secondary weapon in an ankle holster? I'm considering purchasing an ankle holster because I'm spending more and more time in my car where my primary is difficult to get at (IWB). I'm looking for suggestions/things to think about before heading down this road. If there are specific holsters that you would recommend please let me know that. My initial thought is to use it with either a S&W 642 or Kel-Tec PF-9. I'm really hoping to learn from the experiences of others on this one.