Here is a pic.....
http://www.searsclean.com/CarpetCleaning.aspx
The gunjet might be better for small hands, but there is a lot longer throw (trigger travel) than a standard wand. You will be doing lots of squeezing which might lead to hand and wrist pain (ok smart donkeys, insert joke here).
Gunjets are used in the pressure washer industry which doesn't use our technique of on/off wet and dry strokes. The higher the pressure the harder it is to pull and the more shock of on/off trigger movement. It's not as easy as a F-T trigger.
I have small hands like Lisa and a two inch wand is not hard for me to use....the weight of the wand activates the trigger. She used one for some years and didn't have any trouble using it. Also, the way the assist handle is set up makes it impossible to quickly switch the wand to your other side. Your either stuck with being right or left handed.
The head of the wand looks great when it is brand new. Did you notice the sol. hose running thru the handle down the top of the tube. The jet manifold looks to be top mounted also, closer to the floor than the
Prochem Ti. Looks like a 4 jet in the video.