To put it short: It's terrible. Using maps on the watchs feels terrible, because whenver you pan around and touch the screen, it focuses a point and opens a context menu. I don't want that. This is very impractical, and makes using maps on the wacth a big hassle. In 99% of the time, I want to look around the map, zoom in and out, unfortunately it always opens the context menu, which also takes 1 or 2 seconds.
I also own a forerunner 955 and the map touch behavior is perfect. You can click on the map as much as you want, it does NEVER open the context menu, except you explicitely hold the start button to open it. So you can easily pan around the map, move, zoom in and out, without any hassle. I wish it was that easy on the MARQ too.
Please change the touch behavior how it is on the forerunner 955.