@Kabouik: I had exactly the same situation. I pledged for the 120€ option, to get the custom colored kbd. Now my girlfriend decided to order a Jolla and wanted the TOHKBD, too.
I asked Dirk with the "Ask a question"-function on kickstarter and he told me, I should just double my pledge to receive two TOHKBDs.
So, I changed my pledge from 120€ + 11€ shipping to 2x120€ + 11€ shipping.

I don't know, how they will split this up, so that we can configure two TOHKBDs after the kickstarter campaign, but I think, there will be a way to do this