The only experinced rider I know that's done it is my intructor (and all the other instructors from the school) and he thinks it's easy but he would! He's an instructor and can do a u-turn on his Blackbird in a standard road whilst looking in the other direction!!! (so much for *the bike will go where you are looking!* LOL!
With his serious head on, he still thinks it's easy but says it needs a lot of teaching. All their DAS trainees now start on a 125, then a 250, then the 600s and it helps the trainee's confidence plus it's a min of 2 days now spent on module one. This has racked up the cost of the courses a lot but his trainee's pass rate is 98%.
I've spoken to a few of the guys that have done the test (DAS) and they've said it was ok but when it comes to DAS, most men have such an physical advantage over most women so in my opinion, on average, the men have it easier.