With Timeless you will be fine, as it will not re-activate under heat. The coating is not bomb proof, but pretty close especially if you rolled it on.
Glamour II can re-activate under heat, and will ruin a rolled print. I have had it happen twice, both times on canvas prints shipped during the summer. This was Glamour II that had been sprayed on 1 month prior to shipping and it still re-activated. This same issue of re-activation is even worse if the prints are mounted to gator or a similar material and the coating re-activates under heat.
I always roll my canvas prints face in, not face out, coated with timeless, never have had any issues. If I have more than one print in the roll, I will place a layer of non-stick release paper between them.
If I ship Timeless canvas prints mounted to gator, I will place a sheet of the non-stick release paper between the prints as there are times that when multiple substrate prints are shipped you can get some issues on the faces of the prints. I use a coated kraft paper, it has a poly coating on one side and will not stick to the coating.
Paul Caldwell