Hey Jurre,
till we fix #9221 (the issue of obfsproxy not having a SOCKS5 listener), you might be able to work around this problem by doing what kheops did here: https://github.com/kheops2713/telecomix-openvpn/commit/83984d822290f3445adf7...
Basically he is using the external mode of obfsproxy, where he makes the client forward traffic to a specific IP/port instead of starting up a SOCKS listener. Might work...