It appears most apps in kdebase fail to properly support the Qt command 
line args.  -geometry is the best example on konsole.  Konsole doesn't 
even pass the args to kapplication to get them to the qapplication, but 
even if those are hooked up, KCmdLineArgs gets in the way and halts 
execution:

$ ./konqueror -nograb
lt-konqueror: Unknown option '-nograb'.
lt-konqueror: Use --help to get a list of available command line options.

Mike