It seems awesome indeed. Our first computer was also an IBM, as a matter of fact, we still have it lying around, with its original keyboard (the Model M I'm showing here) and the original monitor (which resides in our garage). Unfortunately, we had it when I was a kid, so I think it still has a match stuck in in the floppy drive. I'd love to give the computer a good clean inside out and test how it works one day.
The sticky keys turned out to be just misaligned springs, I just popped the keys off and reinstalled them, everything seems fine now. Oh, and the lack of the Windows key isn't a problem while it's connected to the laptop, as I can always use the one one my laptop's keyboard. If I were to built a PC (which I'm considering to do), on the other hand, I think I'd find the lack of the Windows key annoying, especially with newer versions of Windows such as Windows 10, which make use of it quite a lot.