Your 3" Model 60 can be carried in just about any style of holster (OWB, IWB, etc) because of its relatively small size. The final decision on which is best for you must be made by you, based upon your physique, your usual activities, your wardrobe, etc.
Most users find a OWB (outside the waistband) belt holster to be the most comfortable. Carry position is usually on the strong-side hip, or a little to the back of the hip.
A high-ride pancake style holster will conceal your revolver very well, and is very comfortable to wear. The pancake style pulls the handgun snugly into the side for good concealment and retention, and the fore-and-aft belt attachments distribute the weight very well.
For any belt holster you will need a sturdy belt, and the holster belt attachment (slots or loops) need to be fitted to the belt width in use.
You are invited to my website to view several styles for concealed carry use. There are other forum members who are also excellent makers (oldflatfoot, countryboy, and others). You should be able to find several to talk with, exchange e-mails, view products.