I've worn a Bianchi X15 with a 6" Model 57 (which is what you have) for hours on end while hunting, with no problem. For days and days. So it can be done.
If you get a X15, look for a vintage one on the large auction site. They will have off-white, yellowish colored stitching, not dark brown. Dark brown are of newer manufacture, and not as good as the older ones. The leather is more supple on the older ones, and the dark brown stitching can scratch your gun.
You can buy new harnesses (the part that has the elastic strap and the leather portion that goes over your carry side shoulder) for about $35.00 or so if the elastic looks beat up on the one you get, which is common. They are old, remember.
There are usually several on there all the time, so you can wait a couple of days until you spot one in good condition.
One last thing: they are designed so that you pull your gun up and out, not straight through the metal hoop. You can do so, but it is hard on your gun's finish and much easier to just pull upward and out.
Give it a try. Only then will you know if you can stick it out or not. No offense, but it can be done and only you can decide whether it is for you or not, no one else.
I have a 8 3/8" Model 57 I carry in a X15 while hunting, and a couple of 6" Model 29s I carry at times in another X15, my original one from 1980. No problem, although the 8 3/8" is pretty long!