Thank you! I agree with you, the reverse drums do sound a bit off. I thought they might give the second half a weirder feeling, like the listener is descending into madness or a drug trip or something. Maybe they just sound a bit rubbish though.
To be honest, I was really happy with how the drums sounded in the first half, and I just reversed it and hoped for the best. Maybe I should have just ended the song before it repeats in reverse.