Hi My strada has a QB carbon single seat as you can see in the pic. Its good quality and fit isnt too bad although the front side panels are not quite level with the tank, buts its not that noticable. They dont supply seat pads however but I bought a seat pad and bum pad from Nattyboy for a very reasonable price. Worth asking if he has any more left.
Mine was fitted when I bought the bike, the number panel surround and 1 are not painted and show through as carbon so you can still tell you have a flash piece of carbon on your bike. I thought it was a bit 'R1 ish' but its quite subtle
QB do a fibreglass seat which is what I used...although its cack quality and youll need to spend hours prepping/cutting/sanding !! (fortunatley my painter is an absolute perfectionist and it came out no different to an OE unit !!!) you can mod it to fit the strada subframe..but youd be daft not to take that SP0 one of Rob coz it will save you loadsa hassle !!!