I bought this pen to replace my other Ipsilon that I had used so much I wore through the enamel to the brass. It wasn't looking too classy. I used my Architect's Nib from my previous pen. Simple pop out and change, refill and I was up and running. So far the new silver metal looks good, it is soft so I hope I do not wear through it in 3 years using it as much as I use the pen. Mailing to the US was great and uneventful. They provided a tracking number and actually showed up 1 day early! I would definitely buy from Iguanasell again. Good experience.