Here's a '29er' before the term was coined.
The not often heard of Bianchi Project 7. (Frameset from 1990. Disclosure: I'm not affiliated with the listing)
Mountain (not hybrid) top line using 700c X wide rubber.
This one made with Tange / Ritchey Logic tubing. All sorts of possibilities for versatility and absolutely unique.
Also suggest Midge On-one bars, dual control STI road brake levers but add interupter brake levers. The extra brake levers on the top bar are outstanding for off-road and city upright.