HokieMike, I'm glad I saw Buff's post before I commented. I agree with everything he wrote. I would emphasize the importance of choosing the handgun you are most familiar with as your HD gun. Also, if there is a remote chance kids could get access to it, get a small safe and lock it up! I would reiterate Buff's warning about the safety. I was always taught the safety is located between your ears and not in your hands.
Shoot your 625. You are going to love it! I purchased a used Performance Center 624 JM with a 5" barrel a couple of years ago. I couldn't believe how smooth the double action trigger was. The single action breaks like my 1911. It is incredibly accurate. I purchased a slew of moonclips for it. Then, I couldn't resist getting another 625 in a 4" barrel. I had a Hi-Viz sight put on it and the action set up for 185 grain ammo. Last year I found a 625 in a 3" barrel. I have no idea why, because I don't plan to carry it. It shoots quite well. The damned things are addictive. Now, I lust after a 624, probably a 4". But the prices now are out of sight.
BTW, the grips you have look great.