I am going to have to bring my charger to work. That's what it comes down to. It's a pain, but if that's what I am going to have to do to use my phone at work all day, then that's what I'll do. Needless to say, I am dissapointed.
As someone who has used smartphones for years, in varying models and from varying vendors, you will not get much better from a similar media capable phone. If you use media functions heavily, you're going to see reduced battery life.
Getting another sync cable and using it to charge from your office computer via USB isn't that much and will be more convenient than bringing your wall charger with you.