I have one, had it about 2 months , 1500 miles
There is also a forum section on them here http://www.lexusownersclub.co.uk/forum/forum/181-lexus-rc-owners-club-rc-200t-rc-300h-rc-f-club/
It's fast, loud and stunning interior, the outside looks divide opinion (some love it, others suggest it's a bit ugly)
I know it doesn't matter to you, but the rear seats are really useful (compared to a 911).
It is however a a heavy car, so much more muscle car that "sports car" (think BMW M6, F-type jag, Merc SL/CL etc)
(I've come from a series of 911's, NSX, GTIs and a couple of RS4 avants)
It definitely as fast any any of that much (perhaps faster) but perhaps not A to B
On a track I imagine it would be fun, although it can be just a little dim witted.
If I had to drive to south of France , I would take it in a heart beat, on a special Sunday morning blast with no kids...an older 911 or even something like a F-type convertible might be better.
Mine will be for sale soon (I swap out every 4 or so months) it's already on the Hatfield web site (blue one).
My suggestion is try and get an extended test drive in one, it's truly is beautifully crafted (and full of tech).