Setting Subsonic's connectionstring at runtime

I’m a fan of the Open Source project SubSonic, spearheaded by Rob Conery of Microsoft, which describes itself thusly:

A Super High-fidelity Batman Utility Belt. SubSonic works up your DAL for you, throws in some much-needed utility functions, and generally speeds along your dev cycle.

I’ve seen a few questions on the Internet about setting the SubSonic connectionstring at runtime and thought I’d post what I’ve done. SubSonic includes a tool to generate a DAL for you which picks up settings from your .config file which provides the connectionstring among other things. I’m using SubSonic in a plugin to CruiseControl.NET for EDI processing and here the portion of my ccservice.exe.config file related to SubSonic:

<?xml version="1.0" encoding="utf-8"?>
<configuration>
    <configSections>
        <section name="SubSonicService" type="SubSonic.SubSonicSection, SubSonic" 
        requirePermission="false"/>
    </configSections>
  <connectionStrings>
    <add name="Velocity2" 
    connectionString="Data Source=db;Initial Catalog=db;Persist Security Info=True;"
    providerName="System.Data.SqlClient" />
  </connectionStrings>
  <SubSonicService defaultProvider="Velocity">
    <providers>
      <clear/>
      <add name="Velocity" 
           type="Subsonic.SqlDataProvider, SubSonic" 
           connectionStringName="Velocity2" 
           generatedNamespace="VelocitySubSonic"
           includeTableList="AR_*,CORE_*,EDI_*,II_*,IN_*,SA_*"
           excludeProcedureList="WMS_InsertImportQueue"
            />
    </providers>
  </SubSonicService>
...

One of the things I wanted to do is override the connectionstring using a property on my CCNET plugin. To do that I implemented a property like this:

[ReflectorProperty("connectionString")]
public string ConnectionString
{
    get { return m_connectionstring; }
    set
    {
        m_connectionstring = value;
        SubSonic.DataService.GetInstance("Velocity").SetDefaultConnectionString(value);
    }
}