OC?....
If you can carry OC style, I would.
Just buy a good level II holster & well made belt.
I like the new Safariland AS7 line. The special polymer is designed not to scuff or damage the firearm. It's safe & easy to clean.
The Blade-tech holsters & SERPA from
www.Blackhawk.com are worth buying too.
For leather holsters, see the well engineered Predator from
www.Wrightleatherworks.com . It has a side shield & band to guide holstering,
. Being able to re-holster without looking at the rig(and on the threats/background) is important.
Some Kydex or polymer holsters are good because you can quickly switch the carry style or cant. I used to like the FBI cant but now think the traditional format works best. I carry cross-draw too sometimes.
A "safari" vest from 5.11 Tactical, Duluth Trading, CCC, etc can help in hot weather places like AZ.
Some gun forum members & 2A supporters say the vests scream;
gun. I don't think 99% of the general public is that observant or really honestly
cares. If 1-2% of people you meet or have contact with are "switched on" & ask if your armed, Id be surprised.
A well made vest can also pack your sunglasses, OC spray, pocket knife, cell phone, spare magazines, pen(s), etc.
If open carry isn't your thing, pocket holsters like
www.stickyholsters.com or the top quality DeSantis Nemnesis might work.
A BUG or back-up pistol may be smart. You can add a Glock 27 .40S&W then carry the full size mags for either gun.