I have used it, quite a bit actually. I like it better then 4 ad cyp, and because of the ester you can actually use less then you would of 4AD cyp. 200lb BB, can use 1000mg 4 ad prop per week instead of the 1200-1400 that you would with 4 ad cyp.
I think 4ad cyp at around 1400-1600 is pretty close to about 800-900mg of test cyp. so i would say the prop version should be around 1200-1400 for the same mg. up it if needed.