Las Vegas is a bit more than 2000' above mean sea level and it is a hot area...however it has very long runway(s) and a competent CFR team.
IF the plane was truly in a unique controlability situation, edwards air force base and its 11 mile long dry lake runway is not that far away...with desert in between.
I cannot think of a good reason to fly for 3 hours before landing...somethng else could have gone wrong during that time compromising the plane. While some would say landing with brake accumulators only would make things a bit more difficult, or even the overweight landing inspection possible, it still doesn't make sense to sstay up that long with two hydraulic systems out.
someone mentioned the plane lurched due to loss of the yaw damper...I have a feeling that the plane was at relatively low altitudes and the yaw damper shouldn't have been part of that equation...