I've had this keyboard for a couple of months, I bought it after loads of extensive research, and although I could have bought some of the cheaper Hammer action keyboards for a similar price, I decided on this semi-weighted key bed. I am very happy with this. I think that the velocity response is excellent, so once you're used to it you can still get realistic feeling results on piano sounds. however the keys are still pretty springy.
The real winners of this keyboard are the build, it is very sturdy, but also pretty compact. most of the time I just mount it on my desk.
The software that comes with it is amazing, analoguelab is a tool everyone should have for sure!
And finally, if you manage to configure the DAW control settings this is a feature that I appreciate because it's handy, but at the same time I don't know if I'd sacrifice the budget or space for a stand alone device.