[Thinkpad] WWAN built-in cards and EVDO Rev A and other EVDOs

[Bob]

Thinkpads that support WWAN are currently (Feb '07) shipping with the 
Sierra Wireless MC5720 cards. These cards support only EVDO rev 0.

Sierra Wireless has a variety of cards that fit into the same slot.
See: http://www.sierrawireless.com/product/em_comparison.aspx

One of these, the MC5725, would support EVDO rev A. in North America and 
Asia Pacific.

Questions:
Can the other cards be used in Thinkpads ?
Would the machine boot ok, or get an 1802 or something similar ?