Again, not that the Ink Black needed that in the first place, regardless. I did heavily lube my switch, but it did not interfere with the travel, actuation, upstroke, return, or keypress of the switch in any way, and I prefer heavily lubing my linears as it ensures 100% smoothness. With that being said, I still lubed my Gateron Ink Blacks with Tribosys 3204 as I felt that it didn't require thick lube like Krytox 205g0, and it made it even smoother.
The Gateron Ink Black is super smooth even without lube. It's a fantastic switch at stock, and is probably one of three switches that I'd consider using stock, next to the Tealios V2 and the NovelKeys Cream. I personally like to use my linear switches lubed, but the Gateron Ink Black is one of those switches that doesn't require that treatment to be a smooth switch. My personal preferred weight for linear switches is anywhere between 62g to 67g so the 60g of actuation force is very welcome. The Ink Black is a fairly medium-weighted switch, requiring 60g of force to actuate and 70g of force to completely bottom out. The Gateron Ink Black is essentially a Gateron Black with a transparent, smoky housing and a black stem, and is highly regarded as one of, if not the most smooth MX-style switch on the market, rivaling that of Zeal's Tealios V2, and the Vintage Black.