John A Murray wrote a review of Scarpa Booster Climbing Shoe - Discontinued Vibram XS Grip on June 27, 2011
Don't know if you can still get a pair. I got mine 1/2 price as they were end of line. I always have 5 or 6 pairs of rockshoes. I try every innovation and usually end up wearing my 5.10 Annasazis. The Boosters really shocked me, they wrapped themselves round my narrow feet and although they hurt a bit for three days, they fitted beautifully after that and definitely allowed me to climb a grade harder - Wow!