I'm A Banana
Potassium-Rich
But that's not really the choice that has to be made. Not choosing a few spells because they are tough to refluff as martial powers doesn't mean you are now less effective than the other players.
Well..maybe. I know I wanted to play my Minotaur Bard up this alley (spell selection of buffs and charms) and found it difficult. There's a lot of fluff back-flips and suspensions of disbelief required to do most of 'em, and some really excellent spells in the category are pretty overtly magical. That's not an intractable problem, necessarily, but it's not as easy as all that.