IIRC, I discovered that the Twiggy drive project was an abject failure and wasn't considered ready to ship for the Mac at its introduction. Hence, I'd be very surprised if they had used it on the original Lisa. The Mac was originally designed to use the Shugart 5.25" FDD.

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Actually the Twiggy most certainly was used on the Lisa 1...and was also going to be used on the original Macintosh until they decided to switch to the Sony 3.5" Microfloppy. Indeed, if you have a look through the manual for the original Macintosh, you'll see a few photos of prototype Macs with Twiggy drives.