A mortgage traction like that happened in the Seattle area not long ago: https://www.seattletimes.com/business/real-estate/bitcoin-like-cryptocurrency-used-to-buy-home-in-tukwila-likely-a-first-for-seattle-area-market/.  Before the transaction closed, the crypto was converted to USD.

On another note, check out the ICO for RLCoin, an enterprise solution for loyalty: www.rlcoin.io.  The product has traction with 250 clients and partners in Europe and Asia.