@leirbag28
To be honest - I don't have any experience with commercial keyboard adapters.
But what I can say is that Stephen Marsden's design (IBMkey25) requires connections to the reset, data & clock pins on U13. If the commercial solutions are the same/similar, then there's a good chance they will work with wireless keyboards.
I'm not well up on the electronics side of things, but I imagine that for a USB keyboard (wired or wireless) to work with a USB/PS2 adapter - it
has to be 'PS/2 compatible' also.
I'm working on an adapter that combines the PS2M and IBMkey25 designs. Headers will be provided so that either PS/2 or USB style connections can be used for keyboard and mouse. At the moment, the board is built and the PIC's programmed - but I need to finish off the cables so that I can test it out.
So in effect, I need to know the same thing - are there any USB keyboards with PS/2 compatibility? I'll have a hunt around and see if I can source a cheap USB keyboard and try it out. I'll let you know how I get on! :-)
Take a look here -
Ebuyer - it's the UK site, but there should be a similar product your side of the pond!