Ah, ok, bitbang. I'm starting to get what you mean. But anyways, these are the same I2C pins. Eeprom connects to pins 5 and 4 (marked SDA and SCL) of the touch IC. This was elegant on the part of the designer, but this is what confused me. Sice, I guess, it turns out the pins are used as normal GPIOs and their I2C functionality is bit banged.
In such case there would be no (apparent) way to modify touch IC parameters, like sensitivity, which doesn't make me happy :/ I played with programming more buttons, and the eeprom stores only a list of remote keys assigned to each switch button (plus address of last item on the list for each button). So no calibration data in the eeprom :/