I wore suits almost exclusively for the last five or so years of my career. Before that I wore them for court or big meetings for work, and limited social occasions. I always bought suits on sale at Jos. A Banks. I never had issue with sporting the belt gear I carried during the fitting process. I considered these a good happy medium: the suits looked good and wore well. Granted, I was a boss by that time and I wasn't jumping fences, running down dark alleys, or hooking and jabbing with bad guys so "wear and tear" meant not spilling coffee on myself or snagging a pocket on a desk drawer. Daily I carried a Glock 22 (then a 23), spare mags, and cuffs on the belt and a 27 in an ankle holster.
I never tried to look like 007 (and with the amount of gear the OP said he needed to carry not sure you could), just be able to carry what I needed and not have it print or look like somebody threw a blue pinstripe poncho liner over a refrigerator. The custom guy thing was out there but living in a high COLA area plus making a mortgage and helping to pay for kid's college just didn't make that possible.
I will echo the usefulness of black, brown, and cordovan (ox blood) belts and shoes and ties that let you mix things up. Very useful and can help you transition from formal business setting to night time semi-formal setting just by changing your leather gear.
Be prepared, if you stay in the gig long enough, to have stuff wear out and replace it. This stuff is not made to weld in. Try to find the happy medium of price you are willing to pay (can afford)/looks good/fits well.