Subcompact gearing - 42-28 possible with T47 BB?

[owly]

Originally Posted by Kirk007

The new Easton cranks have 46-30, 47-33, 50-34, 52-36, 52-39 - chainring combos all of which are interchangeable on the same crankarm and with multiple bb options. Crazy light to boot

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I'm doing a 10 speed 2x using the Easton EC90SL crank arms and spindle, with the Race Face 2x 'cinch' spider (104/64) using a 42/27 and 11-28.