The best way to do this is to not define the cell in the storyboard at all.
Create a separate NIB file and define the UITableViewCell
in there. Then you can register the nib with the table and load it from there. Now you just have one copy of the definition of the cell but it can be used in multiple places.
Check my question here...
UITableView registerNib:forCellReuseIdentifier:
It isn't a duplicate question but it will show you how to define and register the nib.