SASless, I've done a lot of practice hydraulics off in the Huey and AS350B and BA, and never noticed one being particularly harder than the other control-forces wise, with run-on landings or in the hover (not common practice, but done a few times).
Never had a real hydraulics failure in the AS350 so can't comment on any differences from the practice case - as nigelh mentioned above, there are accumulators on the cyclic / collective servos that give you a little bit of time to get the speed down, then you isolate the hydraulics and run it on.
Similar magnitude of push and pull forces to the Huey, I reckon, although maybe pedals a bit harder in the Squirrel.