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With the price of eCS, I would not say it fit in the hobby OS.... I know about all the licences and stuff, still, cost too much just to toy around with it.
And who would want to live in a 16/32bit world now? OS/2 is still filled with 16bits stuff, native code (lol @ Win 3.1 !!!).
If I wanted to live in the past, I'd prefer doing it with Windows NT 4.0 instead of OS/2. It was fine when the battle was between DOS and Windows 3.x / 95.