@rng3 You don't have to have a reason to change the cams -- and I don't really view it as "going into the motor" -- all the work is on top, like a haircut.
The only tricky part to it, I thought, well two maybe, is being really observant when removing the cam ladder to make sure you have all four locating sleeves, and the other part, is having a hole camera so you have a good idea of top dead center when rotating the crank.
And it shouldn't be tricky, but putting the valve cover gasket back on without it leaking was more of a challenge than I would have liked. I found using less torque than spec was the key.