Can't help you on the Toad, and I'm not sure on the Pegasus, but I know you can still get a Navigator in a couple different varieties. At least in G-10 and Almite, plus there is/was the "Experimental" in Almite with the slotted handle.
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P.S. I'd check with Lokelani at Ironstone first, or Mark at MJS Knives. Ironstone has a lot of the harder to get Spyderco models, and Mark is just great to deal with. He'll find it for you.