Depends on what sort of information you like to get where you would need to pull your iphone out. Most of this info can be set up on the watch as a "complication." ) a dial face quick access.. I set up several watch faces so I can hahe many of my apps data at a glance.
My main one has one of my stock portfolio investments streamed during the trading day, another is the weather, calendar events, activity rings, heart rate, battery %, & alarm clock. Pull down email, text messages and news. Another has my phone and address book, and text messages. Another has quick access to exercise workout and the EKG, with heart rate, and stop watch, Another watch face similar to the first one but replaces the stock quotes with two quick calling to my wife or daughter. Plus calendar, workout battery%, weather. Another has quick access to my location on a map, currency exchange calculator, voice recorder, and a voice language translator.
While you can surf the web on the watch, I don't find that practical but I do read and respond to text messages and read emails all the time with the watch.