You’d only be adding a floor heating system to a room you’d be at very least tearing the floor out of for renovation anyway. So in terms of invasiveness, it’ll only slightly prolong the work that’s being done, and create some dust from cutting slots for the piping.

In rooms that aren’t due for such a renovation, you can use existing radiators with a heat pump, too. Of course it won’t be as efficient as with floor or wall heating, but it will work. As with everything, perfect is the enemy of good enough.