So far, from what I can tell from the surviving documentation provided on this website, two vehicles were converted to 'Chargers'. Whether or not both conversions were identical is up for speculation as the imagery posted on this website shows two distinct vehicles as one seems to have additional armour around the open topped hull and is apparently the same vehicle that shows up in Dutch use after the war. It appears that this vehicle is also in the Deelen Dump image, looking at the Arm of Service and Unit Serial, as Dan pointed out it is marked to 2nd Canadian Corps Headquarters. It also has the distinctive white highlights associated with these distinctive vehicles.
Now Simonds appears to have been photographed with the other 'Charger' which was equipped with what appear to be chromed handgrips. In a perfect world it would be nice to have a paper trail for these vehicles or yet even one vehicle restored back to its former glory. Attached are some additional images, note the markings and white highlights.