If you think IWB carry is perfectly fine (I do) then I don't see much of a difference. If anything I think a full sized gun in a pocket would be better than just tucking it in the waistband, I don't feel the waist of my pants give my firearm much support.
I usually only carry my firearm in limited circumstances around the house/yard.
Remember, it is your fault/problem/mess if you have a negligent discharge. Hopefully it would never happen but it is always a possibility, lessened if you have a proper holster.
What are you carrying? There should be a holster that fits firearm in that size range.