Certainly Havildar's carried personalised issue kukri or even their own as in the example below;
With regard to Gurkhas using khukuri house kukri, that has been going on for some time now, Captain Indra Gurung had some made for himself and his men when part of the Gurkha contingent in the 5th Airbourne Brigade that went into Kosovo in 1999.
There is a nice old picture in here of the Magar/Gurung holding sirupate of the 43rd (Assam) Regiment of Bengal (Light) Infantry (Goorkha in 1886)
Lushai Assam Regiments