question...
(1) Were there any casinos that actually got hit badly because of this?
(2)Is there any known case with a reported loss figure?
The thing with this cheaters and scammers is unappaling and thank goodness for revolution such that there would a confirmation requests on the end point of the user, that way they will be able to confirm the transactions and of a truth some casinos we're victimized in the process but about the loss case I can't really specify if any was reported but sure there would be due to the high double exploitation.
Based what I just read right now about how the method really worked in the past, it seems there was really no way the casinos fell victim for this double spend it could have just been a minor case which even some person also had the problem during that year that it was happening.