Hello Jos,
Using Konqueror in GNOME pulls in a whole bunch of KDE/Qt stuff, that you do not want (when using GNOME), so I think this is not a real option.
It's a pity you don't quote my first sentence ;) . At least Konqueror doesn't require Mozilla to run. Personally I am not too concerned about running KDE apps on Gnome and vice versa.
Leonard.