Got mine last night, and it works great on my 50MHz 060 A1200 with a Netgear MA-401 card. Haven't done any benchmarking, but it runs quickly enough to browse.
I do, however, have some other problem with the card in regards to not always wanting to connect after a cold boot, and only sometimes connecting after a warm boot. I am using CardReset. I think it's just an issue with the card which I might chronicle if I get motivated.