For several years, I used most of my payment from signature campaign as my main fund source for my gambling habit and there was so low amount that I have spent from my own wallet.
Whether I received the campaign payment directly to casino account or to my own wallet, I used to use it for my gambling most of the time.
However I have changed since last year since I reduced my gambling activity a lot for a reason, so it is rare now for me to use my payment from the campaign to gamble.