I don't carry the 686 on a regular basis, but I have carried it all day for several days in the Pacific Northwest. The cylinder tends to ride on top of your hip bone, taking most of the weight off the belt. At 36 oz, it's easier to carry than a full sized 1911 (40 oz), which I've done extensively. The boot grip doesn't stick out or print, yet is easy to grab.
I prefer the tactical round butt grip for a .44 Mag, since the longer grip helps control the considerable torque that big slug develops. I have a VM2 on order for a 3" 629, based on my favorable experience with the 686.
I have several VM2s for various pistols, ranging from the 686 down to a little Springfield XPs. There is nothing quite so comfortable and effective. There's a slot halfway down the front "wing" which helps the holster conform to your body. The loops have two screws which prevent rotation and loosening. Notice the wrinkles just under the snaps? If you bend the loop backwards at the onset, it makes it easy (ie possible) to fasten them with one hand around your belt. They're one-way, so you have to engage them from the bottom up.