I have these in my Clubman. I'm 6ft, 100Kg, 34" waist. They were a bit tight width wise, but only by the smallest margin, maybe 5mm. I ended up chucking a portapower across where your hips would go, in between the steel rails, and giving them a slight spread. Now they are perfect. I don't have any issues getting in or out of the seats. Obviously a little more finesse is required, and if your lady passenger happens to wear a short skirt, some passers by may get a show they did not expect while she tries to sit in there

I recently did a 3hr drive (6hr return) down to Dunsborough in this car and found the seats to be very comfortable on the long trip. The wife didn't complain either (though it is hard to hear her over the weber). The rails are SUPER stiff if you get them. I think they made them, sent everything off to be mass manufactured, then paint the individual parts (very thick coating), and put them back together. Took some time in the vice with some sand paper and WD40 to get them moving properly. Now they work a treat, look the business, quite comfy. Also, I don't know if it's just mine, but if you want people to get in the back, you will need to pull the head rests off to allow them to tilt forward enough.
Cheers,
Keels.