Whenever we can and it's reasonably practical (i.e. not trying to carry things, negotiate crowds, I need my coffee--now!

), we do hold hands--his over mine. We also have this little habit that whenever we get out of the car, we lean over and kiss each other. Don't know why, but it one of forgets on the rare occasion, it feels odd.
Oh, there is one exception to the handholding--when we're with my MIL. When we were first dating, she had a real issue with our PDA. I'm not talking about heavy snogging/making out, or having our hands all over each other. I'm talking about handholding, standing with our arms around each other, kisses on the cheek. She's one of those women who are overly attached to her sons and treats her sons' GF/wives as competition. She let me know from the beginning that she didn't approve of our behavior, let alone of me. Long story short, DH and I are more reserved around her, physically and emotionally, than we are in our daily life. Strange thing is, she now makes comments about how emotionally distant I am and how I don't like to be touched because I don't give hugs, by which she means I don't hug HER!
PghLybert--That's awful. Of course you need to be safe, but it makes me sad & angry that you have to make that choice. Our society would be a better place if everyone was free to be publicly affectionate with their partners. We need to see more love, not less. (I know that sounds like such a cliche, but I couldn't get the right words to express my feelings.)