i drink two shakes a day while at work. Just bring a shaker with me, go to the kitchen area, throw some milk in, the powder, and shake while bringing it back to my desk. The only need for a blender is with powders like
whey concentrate or bulk powders that have tones of sugar and other stuff. They advertise "mixes well", but we know better.

Drinking the shake before work wouldnt do the same as if you drank it pre-workout, because the getting protein into your system
pre workout is kind of like fueling your body for the upcoming storm. So you really should consider having a shake before working out, but should also make sure you get a consistant flow of protein in your body during the day. So a meal or protein shake before work would probably also be a good idea.