The LCR did not have a towing weight published and therefore was unlikely to have been homologated for towing. as I understand it, this means it is actually technically illegal to tow anything with it even if a tow bar could be fitted.
The new FR however has a published towing weight (1400kg according to the website) and so can be used for towing. I understand that the
problem is that you can't physically fit a towbar with the FR specific rear valance. As Seat don't intend you to fit a tow bar, you don't get the option of having the towing electrics pre-installed.
If anyone successfully installs a tow bar on an FR then please publish how it was done. It was one of the things I wanted on mine but it wasn't a high enough priority to prevent me from buying the car (petrol T FSI FR).