I previously had a G1 Nomad but it was built up as my FR bike ran a 180mm 66 RC2X, and also a Cane Creek +5 (or +8 can't recall), not so much for the HA but to ensure the topcaps on the fork cleared the downtube.
HA was reasonably slack at around 66 degrees. Didn't do that much climbing with it due to the build (heavier rims, tires) and also really noticed the kickback from the suspension when climbing steeper technical terrian in granny gear.
Current AM bike is a Reign. I am trying out a headset externalizer (adds stack height at the bottom) along with a Talas 36. The combo slackens out the bike very nicely so I could pretty much ride anything on it, yet still has the ability to drop the fork and climb the steeps. The Giant Maestro suspension, has almost none of the negative traits the 1st gen Nomad did with regard to suspension feedback while climbing in granny gear.
So, I would say go for it, especially if you have a travel adjust fork, having the bike slack enough to feel confident on the technical decents for me is a must, but climbing with most bike slacker than 67 degrees is a chore.
One last comment, if you don't have an adjustable seatpost get one. It helps keep flow by not stopping to adjust your seatpost for decents or climbs. My knees also love it, as I don't try to climb up hills after a decent with my seatpost slammed down.