Amusingly enough, Wells Fargo has a similar service called SurePay. I have a friend that also banks with Wells Fargo that uses this to transfer funds to be, while it's 'fast' compared to the multi-day delay of ACH transfers it still takes one day before the funds are made available to me - from another customer at the same bank!

It amazes me that we already have four major payment networks in the US that work at the speed of the internet - Visa, MasterCard, Discover and Amex but banks continue to fight to keep ACH slow - probably because they don't make bank on interchange fees.