Its a major change, I would have to change how my search interacted with the grid, I would have to make sure the grid was rendered, all just to have the rows selected. Probably easier for me to abandon the nice row checkboxes in favor of my own button in the grid.
Sure, if I refreshed the page it would return to what my server side store said was selected, which comes from the database.
Its fine though, I need it this week, so I'll just change the JSON to include a toggle button.