I would not advise to uglify the bicycle. It should look nice, especially since you commute to work on it.

Try to lock it on the rack with the good quality locks. You never know anything until you try. Maybe they will let your bike alone. Just look at it carefully after work that nothing is out of order.

Cycle to work in the cycling clothing and bring your ironed working clothes in the special plastic garment bag in the pannier.

So even if your bike is damaged, you will have the working clothes to go home by taxi. By the way you can go to the meetings by taxi too.

And look pensively at and around your building. Dedicate some time to this and you may notice the opportunity, which was not that obvious from the beginning. Bike needs not that much space after all.

Always come to work 20 - 30 minutes earlier than others. It always makes things easier.

Why not just follow the example of the one bike commuter -- buy a cheap disposable bike, ride it until it gets trashed, and then get another one? Frankly, if I worked at a site where people's property was getting trashed, that would be reason enough to ride my bike and keep my car safe at home. You could buy several year's supply of yard sale bikes for the cost of one "keying" or tire slash. You also would go through the day without worrying about expensive damage.

As for the sweat issue, just roll up your suit jacket, put it on the rack, and ride at the same effort you would use if walking. You may be surprised at the outcome. I am fine after a 5 mile ride to work here in DC. Howeve, I am soaked after walking 3 blocks to the metro for a meeting.

I think you should stop worrying and just do it. You may find the obstacles less daunting than they seem.

Paul