The largest online bank in Japan has been testing Mijin since 2015 and has had a 90% cost reduction. With faster transactions and a much more secure network than Ripple, being far more easily customization, NEM is really taking off with all sorts of businesses with implementations ready today.http://www.coindesk.com/japan-bank-sbi-sumishin-blockchain-proof-of-concept/
Another massive platform,https://www.arara.com/english/entry4760/ has been extensively testing mijin and says in their report that the solution is ready to use today with extremely high reliability and quickness in their extensive and exhaustive testing. "(1) We found that consistency did not collapse according to the method of use, and it could stand against about 200,000 transactions per hour. (2) We found out that it was difficult to make falsification and could ensure data integrity due to the mechanism of data synchronization. (3) We found out that it had a high level of availability due to the distributed system. (4) We believe that feasibility of the e-money system is highly possible in terms of consistency and performance."