It definitely has the feel of legacy IBM keyboards.I love those keycaps. It reminds me of keycaps from those old IBM beamspring keyboards.
I had another set of keycaps (mentioned earlier in this thread). I loved the look, but they felt, sounded more like ABT and it offered a higher clicky sound. Particularly the larger keys like the numbpad enter key. I actually started to loath hitting that key, because it felt and sounded to horrible.
I'm generally happy with this set, and I'll probably stick with this for the time being.