I was 2 off, for a very long time, here. Had two very different 2 offs. David's 36 was just hidden from my sight, somehow.
After solving it wasn't clear to me, why I couldn't see it sooner. :)
I liked to solve it (had no 2 off), but for me, the bottom part with all its loops isn't necessary. It just makes it longer for nothing. Would have preferred it straight. This wouldn't spoil the concept that is in upper section.