Better idea: a challenge for the naysayers that are opposed to jump potions.

Make an alt, level just one job to 60, do the MSQ up to the current end, AND WATCH EVERY SINGLE CUTSCENE AS THEY COME UP RATHER THAN AT THE INN.

If you do it, then CONGRATULATIONS! You will be living proof that jump potions might not be all that necessary, but it you so much as look at your main, you have to delete it. Now go! Go! Go!