My entry is targeted at the cycling 'novice'. A keen cycling enthusiast, though he is yet to take the big step and use clip-less pedals with his own pair of dedicated cycling shoes.
Going from toe clips to clip less pedals (see image) can be an intimidating experience and a few falls as you get used to the new system is likely. (Check out the first couple paragraphs if you don't know what I'm going on about - http://www.bicycling.com/article/1,6610,s1-4-41-15223-1,00.html
My 1HDC Cycling shoe uses a removable hook that clips into the sole of shoe and is secured using velcro straps. The removable hook can be worn when the rider is feeling his most courageous as he eases into getting used to clip-less pedals.
When the rider wants to go back to old ways, or is simply not riding his bike the removable hook can be removed.
The lacing system is designed in such a way to make sure it doesn't get caught in the gears, wheels etc. The laces run along the upper to the heel where they can be tightened and then the remaining lace can be clipped down against the heel.
I spent 50 mins on the three sketches seen with 10 mins to spare presenting. Had to rush the last sketch a bit and would have liked to get a bit of photoshop on there but oh well.