Interesting conversation here. I just removed my old aluminum trim that Grady installed with rivets. The walkaround to deck mount was loose and moving around so I had to remove some coring and epoxy and remount the hardtop stantions. Also replaced the 90 degree aluminum brace to keep the walkaround to deck joint elevated as it was wearing through the deck.
In doing this work, the trim choice was the Grady vinyl trim. I had looked at a lot of newer Grady's and they all use this stuff now and it was the only thing I could find that would make the bends and look good.
So, here is a pic of the install. In the 90 degree bend, it left a gap at the top, so I filled that with 4000UV to keep dirt and excess water out. There is one screw that is a snap for the canvas and at the other end, it is overlayed with the gunnel trim which is starboard for now.
I really do like this trim, but expect it only will last a few years.
Removal is best once it is peeled off, use a rag and coat the adhesive with Mineral Spirits and let it soak a bit, then carefully use a razor blade to scrape it off and wipe clean with more mineral spirits. Then use acetone to clean the mineral spirits residue and it is ready to install more trim.
To date, there is no other alternative that I can find that will do this type of trim. I could not even find the original aluminum strips in almond unless I purchased a 250' roll.