Let's see. Taurus PT111 Pro (9mm) carried by a 155lb (give or take) 6'2" blighter (that's me).
Three situations:
1) Fairly busy public restroom, and I couldn't find anywhere to conceal my pistol while I used a stall, as there were no (clean) ledges. So, I started to panic, but ended up holding it under my chin while my hands were busy, resulting in a giant neck cramp.
2) Another bathroom situation; this one had a box around the TP dispenser, so I put the piece there. I was done doing my duty, cleaned up, and picked up my holstered weapon to put back on my belt. Now, I wear what most would term "baggy" clothing - partially due to my build, partially because it's difficult to find small enough pants (in the waist while being long enough and not cowboy tight). So, while putting it back on my belt I must've moved too quickly, and the gun went straight down my pants leg and clinked on the floor a little. I just kinda bent back down and acted like I was tying my shoes, looked under the stalls to see if anyone could see my vantage point, and picked the gun up. Oh boy that made my sweat, though.
3) Large auditorium in a private school. Metal chair, not too many people there except for the ones immediately around me in similar metal chairs. Large *klank* when the stock/grip hanged against the metal backing as I sat down. Nobody noticed.
Most people aren't that observant, folks.
I was talking to someone yesterday that I've known for probably three years; she's in a wheelchair, and her point of view is right at about waist level. The topic of concealed carry came up (her husband is into firearms, and she is by association), and she asked if I had a permit - she had no idea that I even owned a pistol, let alone the fact that I've had one on my person every time she's seen me.
So, if a guy of my stature who can wear 32" waist jeans (albiet somewhat uncomfortably) while carrying can remain incognito, you can too.