To those who own Grey Lambskin Jumbo...

I don't have grey, but I have navy jumbo.
It holds very well (than I thought), scratches not easily but mostly gone with the conditioner.

HIH
 
I've used mine a handful of times, and it's holding up great... but I'm very careful about my bags, never putting them on the floor, etc. Mine looks new so far, I used to have a lot of lambskin Marc Jacobs bags and never had any problems with the leather either...