I want to draw some

g5v0d10v5

nFET and pFET manually (i.e. not using PCells). Is it just a matter of using the

mvndiff

/

mvpdiff

(and other

mvXXX

variants) ?

Yes. Draw

poly

over

mvndiff

and you get type

mvnfet

, which extracts to the

g5v0d10v5

device model.