You are correct in saying you will have problems.
From the elinux wiki:
http://elinux.org/RPi_VerifiedPeriphera ... _Keyboards
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I bought a Microsoft 800 wireless set which worked for another linux box,
But produced 'sticky' keys on the pi, to the point it was unusable .
I now use a wireless multimedia deskset made by ASDA (HKM8016B)
Cost about GBP15 if I remember correctly.
At this point I have to say I work for ASDA
Forgot to mention, version 1 pi ( not 512Mb) running Raspbian...