Well you can get a Rock Rail attachment and lift there, for a tire change, HL also has a tire attachment for the trail..
OR you can use your Hitch to lift the vehicle with, Just stuff the HL in there..
I honnestly don't think there is a better all around Jack for the trail.. Now some people have the X Jack from ARB there are several versions out there. I have heard good reviews from ARB about it, they seem to like it..
I have never used one though, I would think for changing a tire, street or trail it would be great. But it has limited height so if you are in a hole or some other strange place when you get the flat, as you know it is never flat ground off road, it could be a problem, Murphy's law and all..
Hope this helps. IMPO the HL is the best out there..

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007-FJ
It isn't a vehicle,it's a LEGEND
OME
295's Toyo MT's
UP 07 SF
Bull Bar
Warn 9.5
Snorkle
ARB Front Locker
Bandi
Trail Ready Bead Locks
Off Road Unlimited's Light Rack
IPF Lights
Everything from M-Pac and I mean everything
Soon to have (posted 6.5.08)
Rasta Skids
Expidition One Rear Bumper
Inchworm 4.7:1