For anyone interested in technical details we gave the route the follow grades:
Alaskan Grade 6 (M6, AI6, 5.8, A2). Although the climbing is significantly harder and more sustained than the French Route and the 'Moonflower Buttress'. It would be great if a strong team were to repeat our line and eliminate the aid in the future. Bivouac's are hard to find and I expect it would go all free at hard M7 and 5.9.
Here is a photo of Mount Hunter's North Buttress with our line drawn on: