The possessum-possessor order is rare, and is strictly a result of Indonesian interference (it may even be counted as code switching). It occurs in all the Eastern Indonesian Malay varieties, but is only a part of the core language in Larantuka, not Ambon Malay. All the examples from my collected data have pronominal possessives, but there is no difference between full nouns and pronouns as possessors.
Source: Scott 2008: 408
Source: Scott 2008: 175
Source: Scott 2008: 409