But, thanks to the wagon-svn maven plugin, it is possible to do that directly with Maven. The plugin implements a Maven extension making it able to deploy to any Subversion-based repository (actually, it has been developed for Java.Net, that has got such a repository).
So, I've just created a Tidalwave project on Kenai, that I'll use for hosting some common facilities for all my projects, then I added a Subversion repository named "tidalwave~maven-repo". To deploy to that repository, a pom needs the following elements:
<name>Java.net Repository for Maven</name>
<name>Tidalwave Maven Repository</name>
The declaration of the Java.Net repository is used to find the wagon-svn plugin, that takes care of target repositories whose URL starts with svn:.
The first time you do a mvn deploy, the computer will ask for the username and password of the target repository; after you set once, they will be remembered in the Subversion preferences, so this thing will also work with Hudson.
You can check out a very small Maven project using my new brand Maven repository from here: https://kenai.com/svn/thesefoolishthings~svn/trunk/src - TheseFoolishThings is a collection of tiny libraries (mostly made by a single file) for functions that so far I used to copy & paste in different projects, and that now I'm refactoring.