Thank you for your bug-reports and suggestions.
The command column feature is on our to-do list for Service Pack 1. Unfortunately, there is no event raised when all items are data bound. This issue, will be addressed in SP1 too, as well as the fix for the column auto-sizing and unbound column issues. You account was updated with Telerik point, for the time and effort dedicated to improving the quality of our products.
All the best,