The only way that they'll convince a large population of the cyclists is for a Pro rider to start winning XC races on one. Heck, the mountain bike community doens't like change, look how long it's taken for a full suspension bike to be considered a viable alternative to the HT for racers.
If you gave me one, I'd ride it!
L8R
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"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, What a Ride!" - unknown
"Your Bike Sucks" - Sky Yaeger