Surfacing this for those of you who might be interested but weren't following a different thread -
You can buy BlackBerry Q10 keyboard assemblies for US$3.50 or less each (+ shipping from HK): https://www.etradesupply.com/blackberry-q10-keypad-and-keyboard-assembly.html
Repo of all the details necessary to integrate said keyboard assembly into your own projects: https://github.com/arturo182/BBQ10KBD
Digikey for the Q10 keyboard connector's SMT port: https://www.digikey.com/product-detail/en/hirose-electric-co-ltd/BM14B-0.8-24DS-0.4V-53/H122178CT-ND/4552360
eevblog user who came up with a breakout board and provides Gerbers: https://www.eevblog.com/forum/beginners/how-to-connect-to-a-very-very-challanging-blackberry-q10-keyboard-connector/msg1220531/#msg1220531
@deejoe probably painfully with the limited keymap - would have to play some games with sym, alt, and shift to expose enough keys to get around, I suppose
I guess the lack of silk screen for \ | etc probably tells me enough about a lack of convention for that
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