The Super Tuck is a IWB and is very comfortable. I also have a Fobus IWB that is OK for a few hours especially if you're not sitting down much. After a while it tends to dig into my spare tire a bit. If you don't have this problem it may be more comfortable. For wearing all day, day after day, it's not so good, that's why I got the Super Tuck. As the name implies, I can also wear it with the shirt tucked into my pants and still the gun is concealed with no printing unless I really twist myself around and try to make it print.
"An unarmed man can only flee from evil, but evil is not overcome by fleeing from it"