I have a Peterson Stroboclip, six Snarks and a Boss TU-3 so I don't need to rely on tuning to the other strings! I usually (but not always) take all six off when I'm changing strings, so I can give the body, neck and F/B a wipe over with a warm damp cloth. But it's each to his own! :-)

My first post was merely intended to blow the myth that the order strings are changed in, or removing them all at one go, creates issues with tension changes that are 'damaging' to a guitar - greater guitar-building minds than ours say not.