Some will say it's old fashioned. That it is no longer of this time. Take notes of conversations and phone calls to look back on later or just to remember in a nice paper notebook. Write down what the conversation is about and what you agreed on. Or just make some scribbles on paper with an old-fashioned pen.
Others will say it really helps. Helps to focus on the conversation you are having. That you are not distracted by popups, beeps and emails that come in. In this way you also show more respect for your conversation partner who otherwise wonders whether you are just checking your email instead of making notes about this conversation. Don't you prefer to be respected and paid attention when you have a conversation?
If you want to take notes, you can of course do so in a nice leather notebook. Moleskin is our favorite notebook and comes in different types, blank, with lines, checks and in different sizes and colors. So something for everyone. See for yourself.