ABS on rear is a great Idea, I would even go so far as to say It would great to have it on the rear only and get rid of on the front but the other way round has got me stumped as to Why!!
As soon as it get here I am about to try a little gadget that replaces the banjoe bolt on the rear cable which has an expansion chamber in it to take the intial bite out the rear brake, so when you hit the brakes in an a emergency it is less likely to lock up
And before any smart arse's pipe in Sport bike have much smaller rear brakes as they are ineffective (apart from a bit of trail braking) because you have all your weight over the front wheel but cruisers like the rocket also transfer a lot of weight to the front, just not as much so a rear brake is still needed, but for some crazy reason they see fit to put a huge rear disk and Brembo calpier that would put some sports bike front brakes to shame on the rear of the Rocket, correct use of the brakes requires Both being used not just the front, just the rear not as much as the front, but when you have an overpowerfull rear brake like the Rocket has it makes it a bit harder to not lock up the rear.