The Visor itself is not held in by anything but a neoprene lining that is cut to allow the Visor to stay in place.  I wouldn’t turn it upside down, but the Visor fits nice and snug inside when the entire set-up is carried normally.  There is also a cutout behind the Visor to hold about five business cards, which could come in quite handy if you are out on a construction site and making business contacts.

If there is one thing I would change about the Ti Slider, it would be the square casing.  When closed, the Ti Slider looks like a box and is not the most visually appealing item which can hold the Visor.  I took my Visor to a meeting at work and heard a few negative comments as to the look of the case.  When my wife saw the case, she said that "a woman would never buy that case.*"  This could be in part because my previous case was a leather snap-on case that looked pretty nice.  I have used the Ti Slider for several weeks and have not heard any other comments.

Ir Port

I can tell that the Ti Slider for the Visor is a modified version of the model for the Palm III because of the cutout at the top for the Ir port on the Palm organizers.  I have found that if you want to use the Ir port on the Visor without removing it from the case (or are left-handed) you can turn the Visor upside down in the Ti Slider.  This is most likely not the intended way to hold the Visor, but it does work for those who really want to use the Ir port with the Visor still in the Ti Slider.

Usability

Opening the Ti Slider is just like opening a book.  Once the Ti Slider is open all the way, the left side slides underneath the right side.  The Ti Slider also comes with instructions on adjusting the tightness of the hinges.  There is a small amount of noise when sliding the left side into place, and I wish the hinges would have had a plastic washer or something similar to reduce noise.  The good thing is that the case slides out of the way.  When I hold the Visor in the Ti Slider, the overall size is not too much wider than if I was holding the Visor by itself.  This makes writing for extended periods of time much easier.