In my experience, Solartex sticks to itself very well. There seems to be more glue than on films. This sometimes squishes out at the edges of the sheet when applied and forms a really good preventative against the edge coming up. I have found that, on one model, an edge came up and would not glue down again because of paint. I had to peel it back a bit and apply Solarloc, wait for it to dry then seal with the iron.
Painting or clearcoating will make the model much easier to clean and keep it nice and tidy. 'Tex seems to be a filth-magnet if it isn't smoothed over.