I do not recommend attempting to remove the vinyl top. If you don't like it simply don't buy the vehicle. There are many more Eldos without a top than with, you should have no trouble finding one. They drill all sorts of holes to get the shell holding the vinyl to stick to the roof. Also, the roof puts on rust underneath the shell, so just leave the vinyl on and enjoy it.
I think it gives the car a classic and upscale look. Seriously, how many new cars have that? None, as it is unfortunately out of fashion. When I bought my Eldo I spent 800 Dollars plus to have a 1/2 Landau top installed. I asked the shop the same question "What if one day I decide I don't want this vinyl top anymore?" They said that would not happen, and they were right.