Well as you know I get irritated easily and this fits right up there. It isn't really a polished look is it. But I like people's suggestions. There is a product called Hickies which are clickable elastic shoelace replacements. I loathe them but they sound like just your thing. Why not pull at the laces to loosen them then tie the slack? This would allow you to slip your shoes on and off and not make you look, well... um, er (sorry) lazy. In the same vein knot each lace at the top eyelet and snip off the remainder. Consider perhaps skateboard shoes which are designed just to have this untied look about them.