Just because Kraken uses a FIDOR bank account doesn't mean you have to have an account at the same bank. I don't have a FIDOR account and i've been transferring EUR back and forth between Kraken and my bank for years without problems (except for that one time i forgot to include my Kraken account ID as a refenence in my deposit, but that was my own fault and quickly resolved).

The last time has been a while ago though. Just because of all the stories here the last weeks i'll do a test EUR withdrawal and a deposit to test how long it takes. In my past experience it has never taken longer than 1-2 business days (SEPA). Kraken is still the exchange that i trust the most.

edit: deposit from my bank entered on the 16th at 03:15, arrived at Kraken at 10:40 (7.5 hours). I just sent the same amount from Kraken back to my bank (17th 00:56), let's see how long it takes.