Well, to answer my own question I found following in comp.os.os2.networking:
I have been running my t20 laptop with a cisco 340 wireless card and a linksys access point for a while now. Mostly, I have my laptop plugged into my local network with a hardwired nic. However, after reading Mark Dodel's article on os/2 wireless, I thought I'd give it a try.
For the most part, the cisco/accesspoint combination works well. Transmission speed is tolerable, although substantially less than the lan line. It is pretty cool to be able to wonder around the house with the laptop. So far, my only problems are these:
I have to remember to reset the wireless hub before I switch to the wireless nic. Usually, I just let the wireless hub sit there actively connected to the network even if using the lan line. I have found that if I don't reset the wireless hub (unplug it for a few seconds), the wireless connection is extremely weak. I haven't figured out what this is about yet, but, it isn't any big deal to reset the accesspoint when I want to go wireless.
If I let the laptop sit for a long time with the wireless connection, the laptop goes into an unrecoverable sleep state. This could be due to bios settings or power management settings. I am trying some different configurations to test this one.
Using mpts to switch protocol and config.sys settings for the line nic and the wireless nic is a pain. I have written a couple of scripts to automate this process.
Other than that, things seem to be humming along with the wireless setup. All in all, it costs me about $200. Linksys accesspoint from Provantage.com for $140, and $70 for a used cisco card on ebay.
DragenFTP @ http://cotroneo.homeip.net