Topicals only work where you apply them. That will prove to be a pain in the butt, if most of your hair would have been gone by now without the finasteride or dutasteride.
Also, we don't know how powerful RU is compared to finasteride. They could use a typical finasteride or dutasteride dose on flank organ and compare it to a typical RU dose, and see which inhibits growth more by reducing the amount of DHT that reaches the androgen receptor, but flank organ has 5ar1, so the finasteride would not be as effective against it.
I do think that RU would be very helpful. We will find out soon how powerful it is. I think you will have a massive shed on the side of your head that gets the RU. To do this experiment with less problems like that, maybe you should apply green tea extract and grape seed extract to the other side. When I send you the RU, I'll send GTE GSE to you at no extra charge with a PPG, oleic acid, water vehicle, since I'm very curious if it is as strong as the RU. While it would be great if the RU does a miracle, I'm hoping these extracts do just as well, since they are cheaper.