hi stiofan,
thats great news! i have started trying to write the gateway (as a plugin, the same way in which the stripe plugin was made) but i am making slow progress, since i have never tried wp plugin development before. if you think that a version might be ready in a few weeks, then i am more than happy to wait until that time?
if there is anything that i can help with, please let me know. i have some working code for my site already (have been using gocardless there for about 2 years) but the code is mostly just copy pasted from their api docs haha.