Great shot, worthy of the print size.
I see some air bubbles under the laminate -- mostly in the low lying valleys of the canvas weave, but some larger areas too -- especially in LamCloseup2 and LAMOblique-Centre, and fairly consistently in other areas on the print. The effect reduces contrast especially in dark areas of the print. This is the same result I got when I tried a 3.0mil PSA laminate on canvas a few weeks ago. Since you're getting it too, it's probably a systemic issue with PSA on canvas. I couldn't fix it even with full body pressure on a 2" brayer.
My hope with the thin hot lamination process is that the plastic will soften and deform to meet the canvas even in the low areas of the weave, thus preserving gamut and DMAX on the entire surface. A hot roller laminator might be able to make it work, a hardbed screw or hydraulic press would probably be able to do it, and a vacuum hot press would certainly be able to do it. When the time comes, I'll probably take something down to DryTac and have them prove that their stuff can do what I want -- or not.
I may be able to get some shots of my canvas experiments up in the next day or two. Thanks very much for sharing, Doug -- it's incredibly helpful to be able to see!