Wow. I clicked on the Youtube link and had to wait through a 30-second commercial in order to see a 34-second video of someone using the setup. If I have to sit through commercials, I may not be using Youtube as often as I used to!
Every machine/frame combination is going to have a different "feel". I would definitely wait to try it out before buying. Also, I'm generally in the "let others work out the bugs first" category of buyers. The last thing I want to be dealing with when sewing, for example, is a tension issue.