OMD-EM-5 vs Pentax K-5, I'm at the crossroads...

As I'm (like an awful lot of you) waiting for my OMD
one of my friend who's a Pentax user for a long time,
(he have a K-X with standard kit lens)
is advocating the Pentax k-5 body, with the DA* (star) 16-55 lens

But even if I'm still holding my ground, I'm wondering and saying "what if…"
Are there any of you who have a shooting experience with a K-5?
Either with the kit zoom or the DA star?

I want to have a smaller camera, and on that topic the OMD can't be beat,
but the K5 is also smaller than a "regular" dslr so…

One of the things that still hold me to the micro four thirds is the price of good lens,
Pentax good lenses are way pricier...

Any input would be appreciated... Thanks

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A mind is like a parachute, it works better when open.