Pretty typical of most of Jens' stuff, sadly. He's great on the hardware, but a bit lacking on the software. The Indi ECS (which I own three of) also had some promised features never develop. Doesn't take away from it being a great card, but still. 
I tend to agree with your assessment his hardware is second to none, but the software typically is wanting and usually at most an advanced beta state.
Catweasel and Chameleon are great examples of this (I own both including the RR-Net and docking station). But despite this I have a significant amount of Jens' hardware and find it quite usable, once you figure out the software.
P.S. A notable exception. The ACA500s hardware and software both are very polished.