DHL / EAT ?
(As far as my recall memory goes):
It is still allowed , many JAA licenses have multiple "heavy jet ratings".
The only thing which is not allowed anymore is to have combined jet and prop types (heavier types) whenever there are multiple heavier prop types.
E.g. B757/767 and DC3 and DC4 is not allowed
B757/767 and DC3 is allowed
B757/767 and B727 is allowed
If it is wise ? It is up to yourself.
If it is wise as chief ? Dito.
Cheer up !
