Please correct me if the following thoughts are wrong:

Assuming an average bonus of around 15% for all people investing with BTC, the final swaprate for the bitcoindark conversion will be 0.00532074 BTC/BTCD * 1.15 = 0.006118851 BTC/BTCD.
Because the current BTC bonus is 20% it would be better right now to take part in this ICO via BTCD and not BTC as long as the BTCD price is under 0.00611885 BTC/BTCD / 1.20 = 0.00509904 BTC/BCTD.