Having a 7” -9” Long, 2-3lb Steel and plastic boomerang wedged into your belt line is likely to fall far outside of the scope of what most people would label “comfort”
But it should not be distractingly painful or restrictive.
I’m in pretty keen physical fitness and carry huge gun/weaponlight/light/spare mag Etc with no issues but it’s an acquired taste. The benefit for me is consistency in draw whether seated or standing and ability to hide the full size gun/comp/dot/x300 that has come to be the norm