I would try it. I have seen guys use non vinyl trim for vinyl. Its easier to open them up then to close them.
Going from a vinyl top car and taking the top off the trim is always loose and does not fit tight.
Putting a top on you should be able to make the trim work. run a wedge through the trim. Top of the trim goes on first and pull it down over the bottom. The vinyl is cut in the middle of the drip rail.
Don't put thick paint on the rail ,Primer or base paint only. You could also narrow the rail a tad and fit the trim with a strip of old vinyl before you paint the car. There are several options.
