I just bought the BV ball bag in chocolate and I'm not sure if and how to treat her. I'm a bit anxious to use Apple garde spray or the pre-treatment of LMB. So what are your experience with leather care on this bags? I know that they've a very delicate leather and I'd love to carry her through winter but I'm scared that e.g. snow will leave permanent marks/stains on her. So please ladies, advice Thanks!!!