This brief review may be interesting for Propellerhead Reason and/or Headrush Looperboard users. The integrity between Reason and Pacer is great, great. I use my tabletop Nektar Panorama P1 to control the Reason Mixer functions and Pacer lying on the floor controls all its possible Transport functions. I hold guitar on my lap sitting before the monitor and control Rec, Loop, FF, Rew, Stop, Click and more in Reason with my feet. There are so many possibilities to choose from. Getting Reason to communicate with Nektar is not difficult at all - just download the latest driver and Paver - Reason support file from Nektar's site and you're good to go.
I also found out that Pacer is absolutely best companion for my Headrush Looperboard sitting on the table too, as all its needed functions are controlled by midi CCs. Creating respective setting requires some orientation in manual ( which is not so easy to understand for the one who hardly ever heard of midi ). But there's a new on-line editor on the web, which will make things much easier.