You will raise the head tube and Lower the head tube angle , Screwing up the Trail/steering specification A Lot..
Dual Sport?
Better still A Tout Terrain Silk Road [R'off or derailleur versions offered)
Note the gap over the mudguard, That is a Suspension corrected fork , (could fit a 29er wheel in there)
http://www.en.tout-terrain.de/bicycles/tanami/tanami/
Thorn, UK , is another One ..