Unfortunately no. *sigh, but it's ok I really like the board to begin with =D I plan to get the ivory/grey colored keys instead of the black ones. Do you know if they have it?
i'm not sure if they have blank ones if you want ivory (like on the traditional customizer 104) or gray ('speckled gray' like on the endurapro). I know they have the black ones in blank. That might be the only ones they have as blanks actually.
Best bet is to call them up on the phone. Last time I emailed jim owen about buying a set of extra keys for the 1401 he said to basically call their sales phone number if I wanted to order a set. Also, IIRC, they're going to be one-piece I think (if you want the black blanks). I think the whites and grays are two-piece, tho I think diferent people got different results and if you specifically want one piece vs two piece ones you should verify that at the time that you place your order.
do you have a key puller? The wire one from hoolean is best. You may also want a keycap puller if you wind up with two-piece ones.