So, basically, what you are confirming is that there is currently no way to specify an address for use for the ICO. Correct?
Yep, linking your BTC address to your Byteball address is not yet possible. According to the last announcement:
3. The linking phase (when you link your Byteball and Bitcoin addresses) of the 1st round will start in early December or late November.
You'll be able to test the linking in November:
6. Well run a test flight of the distribution in November. You will be able to link your Bitcoin testnet address to your Byteball testnet address, and the distribution will be proportional to your BTC testnet balance.