I dunno
I've changing tyres down pat pretty much lately (excepting 6ply Trelleborgs, but you can ride with those flat anyway!
) I find it more of a chore removing and refitting the wheels and that greasy dang chain
I need to change the tyres at floor height as I need to use all my miniscule weight at times to break the beads and swing off the lever and such
I've a nice little story about a tyre lever, a chin and several stitches
I can still see the horrified look on my bro's face as the lever smacked him square on the chin..big ouch!
same bro who somehow managed whilst swinging a claw hammer to hook the claw bit to his scalp! I won't go into the rest of the details only to say it was a bit noisy and messy