Peter (Gambalunga), I agree the current cowl, like your 2012, is very ugly, looks home made, and doesn't mate at all well with the moto-lita boss.
However the original question was about the 2004 model which (like mine) is a much neater design made by Landrover and when covered with matching leather as on the Allon White website is a very neat solution. The moto-lita boss fits very nicely with this type of cowl.
Dave W recently tried fitting one of the older cowls to his new yellow anniversary 4/4 (Mr Bumble) without success, I think.
Nigel