i only tried it once in store but i was definitely more impressed with the 'illusion' than i thought i would be.
however, i have had a long standing issue (mpb's spanning 2008 - 2013) where having tap to click registers 'ghost' taps while typing (no matter how hard i try to keep my hands from brushing the trackpad-- i swear its doing it on its own). it drives me nuts and i've had to disable tap to click as a result. being that there is now no mechanical click, i worry this issue would become unavoidable.
But on the flip side, perhaps the addition of pressure sensitivity actually fixes the problem of false-positives?