You do realize there is a design difference in the way the scissor jack for a car and a motorcycle is built? An automotive scissor jack is not as stable as a motorcycle scissor jack.

 

Yes I do. That's why I only use it to get the bike up high enough to get my motorcycle jack under if I need to go up higher than a couple inches. As for using it to raise the rear wheel off the table lift, again only a few inches needed and the bike is secured and stable already on the table.
I wouldn't lift the whole bike off the ground with it.