I broke down and bought a center stand for the Tiger, so no need for the PackJack.
I used it on dirt to lube the chain and seemed sturdy to me, I think you could take the tire off with no problems but you may need to park over a rut to get enough clearance for the tire to clear the rear fender.
As far as the length of the adjustable compared to the standard I'm not sure, the adjustable would fit in the side pockets on my Wolfman Wolf tail bag if that's any help.
Overall a very well thought out product.
68 going on 25 and Retired