I have a 2010 totem on my medium uzzi built up to around 36.5 lbs and I take it on xc rides. Hour long fire roads shouldn't be much of a problem, especially if you have a granny gear. I run mine single ring 36T and the Uzzi climbs well for a bike like that. As far a technical climbs go, you can adjust the g3 drop out all the way in so that it will make the BB higher and the head angle steeper, this improves climbing. A totem will be harder than a Fox 36 to climb with, but the totem will help with descending. Reason being is that a totem is 1 degree slacker than the 36 on all settings. I climb decently technical single track with my bike in my dh settings, suspension and g3. So I am sure that if you firmed up your suspension, had a granny gear, and was willing to work harder than on an XC bike, climbing the short technical stuff wouldn't be too hard. I ride an Elka shock, so I am able to adjust that really well. Fox DHX shocks aren't very good for anything. CCDB would be good too.