I can,t say it right now where exactly i saw this, but looks like i saw something like that. You need to look for the AmericasCardRoom and
partypoker, i think i saw something like that there, but maybe sometimes i receive such kind of promotions as personal promotions at email adress.
Anyway i think most of the rooms will promote it someday, just because lots of rooms right now are loosing money , because people can,t make a deposit just because of the rules in some countries.
And this crypto deposits can be a good decision for some people. For sure not everyone likes that, just because it,s a litlle bit new and some people still don,t know, how to use it for a deposit, but i think if rooms will make a good promotions for that kind of deposits, for sure people will take a look at this.