Wouldn't someone have to seek out the Breeze wallet on their own? Do you expect tumblebit to be so compelling that people will go out of their way to find and use this wallet?
As long as darknet markets remain active (they will), word will spread quickly about Breeze wallet. People are becoming more aware of the lack of anonymity in bitcoin and a dead-simple method to make your bitcoins anonymous will be invaluable. Not to mention that the bitcoin powers will want to reference Breeze wallet as the answer to Zcash, monero, etc.