Please let me know how yours works with the adapter for the Matias keyboard. Thanks for your help. 
The Bluetooth Keyboard Adapter just arrived (so quick!) and I am now tapatalking on my iPad with my SGI Granite dampened ALPS keyboard via PS/2 adapter. I have already confirmed on typeracer.com that there is NO discernible lag. It also worked with the leopold FC660M and cm storm QFR!
Unfortunately, no luck with the Matias MQP. As advertised, the HHKB won't work either.
But, instead of being saddled with one non-backlit usb bluetooth keyboard, I am now free to roam to any free wireless hotspot just me, my iPad and Poker 2 and buy more keyboards (using VPN, of course)! The device itself is chargeable via usb and your home PC, laptop or USB charger (not supplied).
The other device I mentioned may work with the Matias, so try contacting them about it.