No squeak that I have noticed so far. Haven’t taken it on much rough surface yet though. A spray of silicone
Finally figure out where my squeaking is coming from. It's from the latch, when it's engaged. The 'tongue' of the latch sits in a slot on the frame of the drawers when engaged, and it's this contact between the 2 metals that causes the squeaking. I confirmed by putting some duct tape on the metal tongue and this stopped the squeak. Just have to find a more permanent solution, but it's duct tape for now!