Any Issues With One Wire Mod at Loud Volumes?

[Verminator25]

I will soon be ordering a Ceriatone JMP '71 circuit and will be having this mod done to it: https://m.imgur.com/gallery/ciCe8Bm

Is there any issue with this mod at volume 10? I have heard somewhere that the OWM doesn't sound good loud; are they crazy?

There will also be a PPIMV on this amp.

Thank you all!