Absolutely no problems at all with the keyboard sounds. The main problem with most hearing aids is the block completely block the ear canal, thereby robbing you of the natural hearing that still exists and amplifying the frequencies you were having trouble hearing. Keep in mind that if you order them from Bose, they have a very liberal return policy for a full refund. Normally, hearing aids cannot be returned, even if they do not work out for your needs.
Give them a try - I think you will be amazed.
Good luck,
Gary

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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!
K+E=W (Knowledge Plus Experience = Wisdom.)