I drove one when it was new (shows my age I guess).
As I remember, all the UK spec cars had full windscreens. The engine was from the Clio Williams. Have to say that I don't remember getting out thinking "wow". In short, a lot of ability, but not that much go.
Post driving one, one of my friends joined Lotus. The joke at the time of launch (the Elise was launched just after the Spider), was that the jig used to build the Elise was smaller than the Spider. Check the weight of the Spider, despite also being made of aluminium, Renault must have added deuterium to it to result in it's final weight.