I've had 3 now and they are additive. The first back in '99 was my only car and i drove 16k miles a year for four years. The hood is a life saver when it's sleeting & snowing. It has stiched in guttering to stop the water going down your back when you get in and out. The rear window zips open to get your shopping in the boot and the screen is heated to stop it misting up. There's a tensioner built into the hood sticks to tention it so it doesn't even flap at a steady 85mph. The lower section of the doors lift up and stay up by the air flow above 30mph to create a good breeze if it suddenly turns sunny. The heater will blow cold as well as hot air. Getting in and out isn't so easy but you soon learn to do a kind of tumble forward manoeuvre like Tony Alcock at the Crown Green Bowls. I think its easier than an Elise due to the narrow sill. Plenty of companies like OMP and Sparco make narrow leather shoes suitable for the office. The only consession I ever made was rolling my left trouser leg like a Free Mason due to an occasional drip from the scuttle during a long journey in the rain. I probably could have sealed it but it was never really a problem. Many reviews sign off that you have to be some kind of petrolhead masochist to buy one, but that's because they only keep them for a short time and don't learn about using the weather gear properly. Don't be put off thinking you can't run a Seven every day, just look for someone on a motorbike and think you've got it easy!
Here in the USA if you want pure , raw no nanies involved driving experience you get a first gen viper...in the Uk a Caterham. Each one really reflect their respective countries approach...and I love both.