That is exactly my concern. If I got that one, I would need to build a platform the right height to put under it. In terms of ergonomics, standing is better than sitting while pushing down on the corker lever, as long as you don't need to lean over.My niece has the Portuguese corker (probably the regular one). IME its best use is table top, although sitting should work. It would kill my back to lean over and bottle 30 bottles, much less 100+. Calling it a "floor corker" is a bit of a stretch, although it works quite well.
The Burgundy Superior Portuguese Floor Corker is 3 inches taller, and one of the reviewers who is 6 feet tall said that he can use it standing up without bending over. I don't know if it would be tall enough for me.