My TwoBits
I just adjusted mine up again (seems I do it a little more every so often). This time I went quite a bit and wound up all the way on one side (keeping the truck relatively level left/right).
Usually I also have ball joints/tie rod ends/tires replaced at the same time, then have the alignment done so it was hard to tell just what effect the torsion bar adjustment itself had then.
This time I only changed tires and they said the ball joints/tie rod ends didnt need replaced just yet (though there was some wear). I had them check the alignment anyway and it did need a toe in adjustment.
Looking at the way its made, Id say yeah, it depends on where you start and how much you go (and if the ball joints/tie rod ends had worn any).
If you dont know already, do the adjusting while there is no weight on the front tires (jacked up with jackstands on the front frame of course

then lower the truck, drive it around a bit and check the ride height/left/right. Jack it up again (w/jackstands) to readjust if necessary. repeat.....
AND (this may be too late) check the left/right height first, as there maybe another issue (rear springs or frame, maybe a couple hundred pounds of crap on one side of the truck) that leads you to try and compensate for in torsion bar adjustments. Of course, the only reason for a difference in right/left height maybe in the torsion bars. Relax, its really very simple.
Also, (if this isnt enough already) look through the many discussions already posted on this subject. Im am certainly no expert, nor do I play one on TV.