I have the XamNumericRangeSlider and I'm trying to style the thumbs so that I would have a DomainUpDown-control with the thumb value (found in SL Toolkit)? Can you think of any way this would be possible? I haven't succeeded in it yet. 

Here's my code (style has bunch of other things as well but this is the part that matters)

<Style x:Key="CustomThumbStyle" TargetType="ig:XamSliderThumbBase">
  <Setter Property="Template">
    <Setter.Value>
      <ControlTemplate TargetType="ig:XamSliderThumbBase">
        <Grid>
        <toolkit:DomainUpDown Value="{Binding MyValueProperty, Mode=TwoWay}" ItemsSource="{Binding ValueList, Mode=TwoWay}"></toolkit:DomainUpDown>
        </Grid>
      </ControlTemplate>
    </Setter.Value>
  </Setter>
</Style>

I have binded the thumb ValueProperty to "MyValueProperty" and I also try to display it in the DomainUpDown. If I set the DomainUpDown values, the value is updated in my property but if I drag the thumb, the values are not updated to the DomainUpDown-control. 

If you could test this scenario and try to see if you can get it working?