Dry mounting is permanent. I wouldn't do that just to show prints.

Also, dry mounting, since it is done under heat and pressure makes an indentation on the mount board. It will be very difficult to do that on both sides and have both of them look absolutely perfect.

What I do is, I have many backing board with photo corners and a mat board with windows already cut. I use that to show my prints, if Itoya stuff is not sufficiently formatl.