I've found its as much attitude as it is attire. If you project confidence in having your EDC available, you'd be amazed what people will ignore. <img src="/images/graemlins/smile.gif" alt="" /> It also helps if all your gear is in good order, polished and shiny. You're right about darkening out the Leatherman lettering on the sheaths though, I've been doing this since Doug pointed it out on one of his LM reviews. Another thing I've found that helps is to wear the LM sheaths sideways, it blends in more (especially if you suffer from Dunlap disease as I do).

During the day I'm usually either in a full suit or "business casual". My EDC is the same for both:

# Ironman watch (these things are 100-meter waterproof and nigh-indestructible) - left wrist
# "Lucky Secure A-Key" clip - on front left belt
# Inova Microlight - on keys
# Inova Microlight - on ring with work badge
# Tornado whistle - on keys
# Comb - front right pocket
# Leatherman Squirt S4 - left front pocket
# Wallet - left rear pocket
# Handkerchief - left right pocket (need to get some bandanas)
# Leatherman Charge Ti with two bit trays - in sheath on front right belt
# Blackberry (I hate the thing) - rear right belt

When in suit:

# Leatherman e306x - in sheath on rear left belt
# Compaq iPAQ h4150 - in right breast jacket pocket

When not in suit:

# Leatherman e306x - in sheath on front right belt, next to Charge sheath
# Compaq iPAQ h4150 - in left cargo pocket, or in coat/jacket pocket
# Work badge - on front right belt


All this stuff is actually much less conspicuous when I have my suit jacket on. The only thing you see is my keys on the clip. If my EDC seems a little light, its because it is. I'm usually never more than 500 feet from my car, which has a full-size FAK and lots more gear.

By always being prepared in my urban office environment, I've actually worked up a good reputation for always having tools and odd items available. I also have a couple of coworkers who regularly come to me for knife sharpening and cleaning. Go figure.