Q and Pentax K adapter

Hi,

I have been getting quite interested in the Q especially since the arrival of the Q10.

I have a Pentax DSLR and quite a number of manual lenses, has anybody used the K mount adapter and with what sort of results.

I am primarily thinking of my M series lenses which are small and light enough and would give some added impetus to the zoom end of things, if my calculations are correct the 100mm should get me somewhere in the region of 550mm.

As the years roll on the DSLR is getting too heavy for me.

Thank you.

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CD