i was always terrified to treat /spray anything on any of my bags! terrified!!!
but after much convincing i decided to use the wilsons and i am SO happy that i did
I now can actually use a bag and if it happens to rain i dont have to have a heart attack about it
it DOESNT STAIN! its amazing, before alex got ruined, i took it out and there was a rainstorm and it got all sorts of wet, looked spotted with rainspots i was terrified, and then they dried RIGHT UP NOT A MARK ON HER!

it was amazing
so i am now a FIRM believer in the wilsons spray
AND i just got a meridith and i treated the crap out of it, because i know its the same leather as the charlie and thats is the one lexie had in rose and it got ruined in a week, and she had treated it,,, but i am treating it even more so hopefully it wont get messed up!
but yea i would say spray it!