That handle looks about as comfortable as grabbing onto a saw blade. Not exactly "ergonomic".

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Also, you would need to know in advance what tools you'd want to include as you customized this thing. If you know in advance, why not just take individual purpose-specific tools? The appeal of the Leathermans's and such (for me), is the ability to not know what you'll be needing in advance, but you always have something that can cover in a pinch. They're not great tools, but they work well enough for an unknown situation to maybe get you buy. Nowhere near as good as real single-purpose tools however.
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