I have been playing a druid/shaman personally, and I have all of the shaman's ability's as the F# buttons, and the druid's as 1-0. It's a lot of button pressing this way, but you have more control over what you want to do, and IMO it's not that much more button pressing than playing a rogue, haha.

I will note though that I also tried out a mage/warlock combo and it's a lot easier to make shadow bolt/fireball as the same button since they have the same cast times, cool downs, etc, as well as a few of their other spells that are very similar.