Question about Gigaset E560HX (DE version)

I wanted to buy the Gigaset E560HX, it was well specified (CH-version on the product page), It was in two colours, "Grey" and "Silver", I saw that the Grey model was cheaper and so I took it. I've now realised that it's not just the colour that's changed, as the grey one is marked 'French version'... So it's a different product and not the same product in a different colour. Reading the questions, I realise that it's not just a question of interface language, but also of compatibility. Does this mean that the French version can't be installed in Switzerland? It won't work?