Mk II British Camo with a Canadian twist

This particular Mk II helmet was acquired from the family of a Canadian veteran his Battle Dress is attributed to the Royal Canadian Artillery 5th Light Anti Aircraft and is dated to 1943 it is sporting cloth divy's for Italy and canvas unit and Canada flashes I will post the BD up in a different thread.
This camo painted Mk II is rather an interesting helmet there is a lot going on with it the shell is British manufactured but has a smooth finish so IMO not a standard army issued Mk II .
The helmet body was produced by (EC&CO Ltd) E Carmeliant & Co Ltd Birmingham and is 1940 dated now here is were things get rather interesting it is sporting a 1942 dated VMC liner
( Viceroy Manufacturing Company) and a Canadian war time period chinstrap there is period evidence in the form of images to support this type of camo pattern was worn in the theater of operations in Italy,Sicily and or South western Europe.
The liner and chinstrap look to have been in this helmet for many years and IMO the camo looks good and shows some nice aging and patina I would love to know how and were this helmet came to be in this configuration but feel this information for the most part will be beyond my reach

Regards Mark