Hi Greg Duffield,
Thank you for your interest in Rad Controls for Windows Phone 7.
This is a common scenario, and we are thinking of addressing it but it will not be in the first drop of the controls. With Q1 and Q2.2011 we will work on building the must-have controls for the phone suite which includes virtualized grouping listbox - e.g. JumpList, Charts, Gauges etc.
After that we have ideas to introduce a multicolumn listbox, where we will need
to have horizontal virtualization, but it is still too early to estimate and to give you concrete dates if/when this will happen.
the Telerik team
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