They would need to be built to work well for vertical waterfall ice and be adjustable without tools.
They must be able to work on boots w/o front welts (so it would be the strap only kind).
The rear should have the bail for boots with a rear welt/ledge.
Please post here if you have anything. I'll also check MEC's gearswap.
Here is an example photo of the setup I hope to find:
Andrew
