I can confirm a fully working 1.1.1 iPhone (iNdependence, SimFree) with A1 (Mobilkom) in Austria. I am using an A1 Blackberry SIM card.

Settings for EDGE / GPRS (took me a while):

On your iPhone go to: Settings < General < Network Edge

APN: a1.net
Username: ppp@a1plus.at
Password: ppp

Cheers Tom!