Its only showing off if you go out of your way to draw attention to your bag. Wear it to work, but I wouldn't point it out to people like you were looking for a compliment.
I just got tired of Coach but still new to LV. My concern is if carrying LV to office too "show off"? (especially when my female bosses/co-workers all carry Coach bags). But if I don't carry the bag to the office, what's the point of spending a thousand only to use it 2 days a week during weekends?
What do you think?