I don't use Konqueror ! Though it's very fast .. the only problem it didn't search google if I only type site name.. Like I type blender and enter FF will direct me to blender.org but konquror will not
For google and other shortcuts you need to type "gg search term" or "google search term" then it searches, its in the "web shortcuts" list in "configure konquerer" under settings menu.
Konquere does have a bunch of usability issues, not to mention rendering problems...
But I use it mainly for most sites and only open FF if something is broken in Konquerer