Basically, the more porous the bag (like nubucks and suedes), the more dangerous it is to attempt conditioner application because it may darken/spot. If it's very porous, just spray it. In this case, I do think it's fine, but I did not bother to condition mine yet because I didn't feel it needed it. I have the turquoise satchel, and it also doesn't really seem to have a problem with denim transfer either, which I was thankful of since I was carrying on the arm mostly.