I have never understood the "it drains slower" complaint. Sure it drains slower, takes maybe an extra minute or two?
For me, I pop the hood, take the fill cap off, get my pan and put it under the vehicle then open the Fumoto (hey, no tools to get, no need to remember what size wrench to get). I then go get the rest of my oil change stuff (filter wrench, oil, filter, rags, and nitril gloves (don't need them to open the Fumoto)). Then close the Fumoto (usually just dripping by then) then move the drain pan and take the filter off. Lube filter gasket and put new filter on. Move drain pan back under valve and open for another 30 seconds or so to get any other oil that has drained to the pan, close it and wipe it off. I then fill with oil and am done.