++ Some people will "latch-on" if you talk about shooting, going to the range, or anything at all to do with guns, bullets, self-defense, CHL, etc... By never discussing these type of things with coworkers, people will never give you a second look.But I'll tell you what I'd do...
#1 NEVER SAY ANYTHING ABOUT GUNS OR SHOOTING TO ANYONE AT YOUR JOB, EVER, NO MATTER WHAT!
#2 Once you get your CHL, carry normally to and from work...I would get a little gunsafe and lock it up in your vehicle while on the clock...Do not let anyone at your office see, assume, or have any reason to ask what you have in that thing...If you are cornered, just say you have some emergency cash and supplies in there, to ward off any other inquiries...
If you value the job, I'd play it low just like the above poster mentioned. Heck, you could even carry like this and would probably be OK unless you get made. If you do, expect to lose your job.
If you ask for authorization, and don't get it, expect an even harder time even having the gun locked in your car while you work. It's really a no-win situation IMHO, and I think it's best played out with extreme discretion.
Good luck!