This is CC not OC, but since I don't think anyone will object to the question, here's my $0.02. Many years ago, before OC was common, I carried regularly in a Bianchi vertical shoulder holster. [At the time, I didn't know that Galco's horizontal ******* rig existed, otherwise I would have owned one. I tried one that my friend brought to the range a while back, and it is much more comfortable than my old Bianchi rig could have ever been.] Anyway, shoulder carry worked very well for me when the weather was cool to cold, but there are obvious disadvantages in warm weather when a cover garment will appear out of place. I found it to be a comfortable way to carry full-size weapons like your P229, and access to the weapon is reasonably fast.
You didn't ask about this, but for warmer weather, consider IWB or (if you aren't too fashion conscious) a fanny pack. Personally, I carry OWB. If it is cold enough for me to wear a jacket or coat, then it is CC, otherwise it is OC. During the four years I lived in FL, where it is hot for ten months out of the year, OC is prohibited, and printing can be a problem, I carried in a fanny pack. God bless VA!!