Here are hopefully some better pics of the final products.
The Knaider: Try to find a stiff strap for going around the calf. It will help with support. As for the hook; I would not want it larger. I am curious to hear other people's findings. For now I am using a plastic tie to cinch around the foot. Trust me, you do not want the webbing to cinch down tight on your foot, both for safety and comfort. And ya, my sewing sucks.
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The SWaider: Length of Bungee will depend on where you clip. I have just enough tension on it so it flips the carabiner up as I climb. Makes it VERY handy to unclip. I clip to my harness. seems very convenient. The bungee needs to be cinched tight to the carabiner for it to work effectively and not risk coming off when you unclip from a step. Webbing is your friend, better than thin amsteel for this application. Webbing also needs to be cinched to the carabiner so it does not flop around when you are fiddling with the carabiner.
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All hardware came from strapworks. 1 inch metal hooks, plastic side buckles and 1 inch metal strap adjusters is all I used.