i would be carefull carrying a glock IWB w/out a holster, have heard and can see where that might not be a good thing to do. oh i carry mine that way too sometimes, but i do see where it might cause probs, i know glock doesnt reccomend it FWIW. be carefull.
imho the barreta '92 is a good pistol, but it sucks for edc carry, i did it for a while in the mid 80's (after watching 'lethal weapon' lol) but its not very good in that role, and not designed for that, its just too big/thick/bulky, a kahr P9/PM9 or a glock 27/27/33 has the 92 beat to heck in that role. still have the pistol, good holster gun for open carry, not so good for concealed. really a colt 1911 .45 is easier to carry concealed, and a lot lot better pistol in that role imho. upon reflection the 1911 is WAYYY easier to pack concealed than the 92.
in a revolver for edc i would get a S&W snub i guess, its the smallest/litest one going, i would get a alloy frame .38 spec, i would stay away from the Ti .357 mags for darned sure. i also know that the newer S&W's trigger pulls are HEAVY, lots heavier than my early '80s vintage .38 or my early 90's 9MM, and way heavier than my '70s colt detective special. they are sure getting expensive though, for the money i prefer the kahr P9/PM9 myself.
imho the best edc pistol is a kahr PM9 or P9, i have both, a great edc carry gun, never a jam, very accurate, lite, slim, easy to pack every day. the glock 26/27/33 is a close 2nd imho, the thickness makes it just a tad harder to pack imho, BUT ya do get a higher capacity, i put a '+2' floorplate on my 33 .357SIG and it holds 12 rounds with one in the chamber now, a lotta ammo in a small package. but if ya can get by with "only" 7 (PM9) or 8 (P9) rounds the kahr is hard to beat. in the summer i pack the PM9 almost exclusively, in the winter the glock 33 and the P9 split carry time.
good luck!