I used Easel for creating g code for the first time to use on my shapeoko 3 XXL today. I wanted to report no issues with the gcode other than needing to increase the stepover. I ran it through carbide motion without issue. One note: the easel gcode does not ask you to insert the correct bit. You hit run and it goes. When you choose to do roughing in one pass and detail in another, it generates 2 sets of gcode which is nice.
I think the most attractive part of using easel is the ability to use someone else's design. Inventables allows anyone to share their files and they are stored in one place. There are tons of premade designs on there website. Something like that for carbide create would be great, as opposed to searching the forums and wiki for everything. A community design library would be awesome.