For subsurface, it’s not too bad… MOST of the time. But with modifiers, generally, you want to see what the model is looking like before the modfier because you can start getting some strange results because it’s not behaving like you’re expecting and it’s usually because the underlying base geometry isn’t necessarily where you think it should be because you were modeling with the modifiers on. If you have any modifier on and it’s not behaving like you’re expecting, try turning off the modifier and make sure your geometry is where you think it should be. If you do that, you should be okay most of the time.
