Hey all! I recently had a Filco MJ1 modded by Sifo so here's my short review. Unfortunately no pics right now because I'm waiting on a cable from mimic and a few other small things to finish it up.
Sifo is super cool and friendly, I was kinda nervous as it was my first time meeting another geekhacker in person but that passed quickly after we started talking. I came to his side of town for drop it off, and he came to mine to deliver it back to me which was really nice of him.
I am very impressed by his work as well. To be fair I don't really have anything to compare it too, but it looks and feels phenomenal and I couldn't be happier. Sifo clearly puts time into his work and has excellent attention to detail.
Pricing was super fair too, it was nice to be charged in Canadian for once especially considering how crappy our dollar is atm. Turnaround was really fast (work was done within 3 days IIRC), although as Sifo mentioned that is liable to increase so don't expect to get the same speed in the future.
Overall, dealing with Sifo was a great experience and I would definitely recommend him to fellow Canadians for keyboard services.
Thanks Sifo!