Not used one shout yet. But I haven't even killed my first Dragon yet, so... I've not been forced to. I'm in the same boat though, I could easily play this game with the knowledge that this game didn't feature them.
As an Argonian, for weird RP reasons, it feels weird when one shouts in such a deep voice. :P
I don't know how I'd survive without "Become Ethereal". The uses are so many... Avoiding a dragon's fire/frost breath, jumping off cliffs, walking through dungeon traps, closing the distance between enemy mages/archers, charging up Master rank spells, general use in every combat scenario... It's great --- "The SAFE was slain in battle. A great flaming nautical pyre carries it off to VAULTHALLA." www.youtube.com/user/Terrafuror - Gimme a view ;)