A few users have reported satisfactory fitment and construction of the TROA tops here on the forum. I don't think they've been used or available long enough to say how the construction and materials hold up to long term use/exposure.
@KingAir Driver is one user that has a TROA top. Given the lack of other option or the price of other available options, I wouldn't hesitate to go with a TROA top, even if the longer term plan was to use it for a template to have a higher quality unit custom made stateside.
Here are a couple threads for your reading:
forum.ih8mud.com
forum.ih8mud.com