I am proud to present a TWRP build with working crypto! That means, that you can access your data partition even if it is encrypted from Android!
Decryption is confirmed to work with a 3x3 pattern and with a passcode.
Download link: https://private.z3ntu.xyz/fairphone/TWRP_3.0.3-1/
Take a look at the readme.txt file for info what file is what.