When you check AB facebook page and read the passengers' messages, you'll see that lost luggage is still a major issue. I am travelling TXL-MUC in August; in MUC I connect to an AA flight to PHL (the same reservation), and I really need to have my bag because I will be travelling around quite a bit. I would gladly avoid AB and its mess at TXL by flying IB via MAD or even BA via LHR and connect from there to an AA flight, but unless there is a major schedule change or AB stops operating, this does seem an option.