I use it by default and wind up using !g half the time as well. Though often DDG comes up with results I couldn't even dreamed of. As for today I was looking for the elevation of the nurburgring (in light of the track record and the insane performance of the 919 on the uphill section) and I ended up on this brilliant website with the entire height maps: https://veloviewer.com/segment/5539685

On the phone I switched back to google as default as inserting the !g was a horrible experience to go through every time I wanted to look something up quickly.