versions in the assembly names in the repo

I have just finished building the library example spun by the library archetype for the 1.6-incubating-SNAPSHOT version of nmaven.  When I examine the contents of my local repo I notice the assembly file contains the version name just as a typical java artifact does.
 
When I look at the older 0.14 nmaven site docs I notice support for using org.apache.maven.dotnet.plugins:maven-install-plugin:install-file on a pre-compiled assembly.  I'm assuming the same functionality exists in nmaven 1.5+ but inspection of my local repository format indicates otherwise.  I was assuming the DefaultArtifactResolver would somehow be configured so as to use an alternate repo layout supporting assemblies without versions in their names.  Without such a change I don't understand how 3rd party closed-source libraries can be supported.
 
Can someone please resolve my confusion?  Do i need to do a bit more configuration and somehow set-up two repositories with different layouts?