Just got home and it's arrived....
Puts the WCW one to shame a lot more solid build including the lance and gun, the gun is rubberised so dropping is not a problem.
Other features are:
Rubber seal round joint between top and bottom half so no leakage problems when filling.
Drain hole in bottom of tank so no need to tip upside down to empty.
Clip on bracket on side with 3 positions to clip the lance to when not in use.
Yet to try it out as an actual sprayer.