I ordered 2 of these from:
I would recommend them as they were very helpful and delivery was prompt and without fuss. (Word has quickly spread though, there selling like hot cakes)
After using a Zipstick Pro for many years, i was glad to see that this had microswitch fire buttons. Win XP recognise it instantly & the stick works great, and yes you can set up winuae to use two at the same time. Just had a quick two player game of Bubble Bobble with the missus
Also had no problem using second fire button on games that use it including Apidya, in which the autofire also works well. Not sure how many games support the extra two buttons, but could be good for MAME.
My only reservation is that it is not as "tight" as the Zipstick, as the microswitches are pretty weak to press. This is just a personal thing, and i will order some firmer switches via work and change them over.
This is a must for anyone wanting a classic Amiga/Atari/C64 stick.