Citizenship for PR NSF is not a 100% guarantee.
When u are close to ur ORD date, u will be offer to take up
citizenship.
Since u are "offered", u can
a.) Accept it
b.) Reject it.
If u accept it, u fill up a form after which, u will be ask to go
for an interview. That is why it is not 100% guranteed because they
can still reject u. If all goes well, u will be converted as per
the SOP of the immgration authorities.
If u choose to reject it, just dun fill up the form then u ORD as a
PR NSF lor.
BUT hor u are stilll subjected to the reservist liability, doesn't
mean u dun take up citizenship, u are free from reservist
liabilities one.