1700' downhill takeoff in a general aviation airplane? Piece of cake. Same with the uphill landing. It's like anything else. It looks like a big deal because of the spectacular background scenery but 1700' is typically all a GA airplane actually needs to takeoff and land. The bigger issue is the density altitude. On a hot day it's probably impossible for that Citation to take off.
The runway drops away pretty steeply - or at least it looks like it does in the picture (18.6% grade according to the published specs) - and that might help you accelerate for takeoff. If you manage to get airborne in ground effect, the rate of climb needed to clear the obstacles at the end of the runway appears to be negative. All in all, not a bad place to fly out of.
However...... landing there would be a bit more of a challenge. I notice that there is no published "missed approach" procedure (I guess it would be a little callous to print "on missed approach, crash as close as possible to the fire station."), which implies that there's little hope of a second chance. On the positive side, the uphill gradient will assist in braking.