I've really enjoyed getting into it and learning to customize some settings, etc.
Here's my quick, initial response:
Great design, craftsmanship and overall layout. Roger's customer service is unprecedented.
I found it's been a great instrument to help push me into new directions, especially because I can't just rely on habits and chops.
The more challenging side is trying to learn and perform music I have already learned. Not so much because of the places my hands want to go by default, but primarily because the Linnstrument doesn't have physical references like a traditional music keyboard, and because the pads are quite small.
I've noticed that so far, I've never seen a video where the performer is just playing without looking at the instrument. On other instruments, I can quite easily play with my eyes closed. This controller requires more attention.
I'm not saying that as a negative, just an observation...