Finished a job this summer that used Nuvico DVR with 3 K4 touchscreens. Works great!

We were able to use the touchscreen or the Nuvico wireless remote for control.

The only problem we had was rolling bar on the screen that was corrected by turning off the ambient light sensor, installing ground loop isolators and using an adjustable video amp for the feed to the 3 touchscreens. There are other threads about this issue.